The Paraneoplastic Presence- Phosphaturic Mesenchymal Tumour

Case Report

The Paraneoplastic Presence- Phosphaturic Mesenchymal Tumour

  • Anubha Bajaj 1*
  • 1* Consultant Histopathologist, A.B. Diagnostics, A-1, Ring Road, Rajouri Garden, New Delhi, India.

*Corresponding Author: Anubha Bajaj, Consultant Histopathologist, A.B. Diagnostics, A-1, Ring Road, Rajouri Garden, New Delhi, India.

Citation: Anubha Bajaj. (2020) The Paraneoplastic Presence- Phosphaturic Mesenchymal Tumour. International Journal of Clinical Case Reports and Reviews. 3(4); DOI: 10.31579/2690-4861/040

Copyright: © This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Received: 10 July 2020 | Accepted: 27 August 2020 | Published: 09 September 2020

Keywords: Key words

Abstract

Abstract

Preface 

Phosphaturic mesenchymal tumour is a unique neoplasm of bone and soft tissue delineating diverse, specific histological features along with production of FGF-23 and associated metabolic bone defects such as rickets and osteomalacia.  Paraneoplastic syndrome engendered by the neoplasm is associated with an acquired variant of oncogenic osteomalacia (OO), which can also appear in diverse mesenchymal neoplasia.  Reoccurring tumefaction with oncogenic osteomalacia (OO) can emerge within sites such as mandible along with pulmonary and soft tissue metastasis.
Although the neoplasm can delineate intermediate malignant potential and unpredictable biological behaviour, distant metastasis is exceptional.  Phosphaturic mesenchymal tumour was initially described by Mc Cane in 1947 with subsequent concordance between the neoplasm and osteomalacia [1]. Subsequently, Weidner and Cruz denominated the terminology of “phosphaturic mesenchymal tumour” (PMT) in 1987, adequately describing the morphological characteristics [2]. Although osteomalacia is manifest, phosphaturic mesenchymal tumour can be histologically misinterpreted. Occurrence of phosphaturic mesenchymal tumour in young individuals with skeletal deformities requires a distinction from disorders such as rickets or vitamin D deficiency. Elderly individuals depicting incrimination of ribs or multiple vertebral bodies may be indicative of multiple myeloma.

Disease Characteristics 

Although phosphaturic mesenchymal tumour can arise anywhere within the bone or soft tissue, appendicular skeleton and extremities (95%) are commonly implicated whereas head and neck (5%) lesions are exceptional.  Within the head and neck, tumour localization is discerned within sino nasal cavity (57%) followed by mandible (20%) [3].Also, lesions can emerge within chest wall, pharynx, maxilla, tongue, breast, spine, floor of mouth and posterior neck. Extra oral tumefaction is frequent in females with a female to male proportion of 2:1. Intraoral tumours delineate a mild male predominance. Tumours arising within hard and soft tissue are equivalently distributed with a slight predilection of bony sites, such as distal radius [3, 4].Median age of disease representation is 45 years whereas the condition is commonly discerned between 24 years to 58 years, although young subjects can be incriminated and no age of disease occurrence is exempt. A slight female predilection is observed with female to male ratio of ≈ 1.7:1. Specific factors of probable disease emergence are absent. Tumefaction is miniature and gradually progressive, thus several or a mean of 5 years is necessitated for adequate tumour localization.Incidence of phosphaturic mesenchymal tumour arising within head and neck may be enhanced as the neoplasm is frequently misinterpreted as glomangiopericytoma, giant cell tumour or low grade osteosarcoma. Phosphaturic mesenchymal tumour comprises of majority (80%) of mesenchymal neoplasms engendering oncogenic osteomalacia (OO) whereas around 20% of osteomalacia associated neoplasms are adjunctive mesenchymal tumefaction such as haemangiopericytoma, giant cell tumour of bone, osteosarcoma, fibrous dysplasia, aneurysmal bone cyst or chondromyxoid fibroma[3,4].Phosphaturic mesenchymal tumour produces fibroblast growth factor -2 (FGF-2), a protein which inhibits reabsorption of phosphate or dentin matrix protein1 by renal tubules [3].An estimated 60% neoplasms arising within non head and neck sites can harbour a chromosomal translocation with production of contemporary FN1-FGFR1 fusion protein, which engenders an upregulation of FGFR1 receptor[3,4].Majority of phosphaturic mesenchymal tumours are benign whereas an estimated 10% neoplasms relapse. Malignant metamorphosis is accompanied with multifocal or metastatic disease.Multiple, miniature, non-obstructive foci of pulmonary tumour metastasis can be discerned following repetitive surgeries. Malignant neoplasms can metastasize to nasal cavity, lip or tongue [3, 4].

Disease Pathogenesis 

The neoplasm frequently engenders tumour induced osteomalacia (TIO) which is a paraneoplastic syndrome characteristically delineating phosphate wasting within renal tubules with subsequent hypophosphatemia [4].Osteomalacia is an adult metabolic disorder incorporating mineralization of mature bone and is generated by vitamin D deficiency, various medications, malabsorption, hepatic or renal disorders. Oncogenic osteomalacia (OO) is an exceptional clinico-pathological condition of acquired, secondary osteomalacia arising due to phosphaturic mesenchymal tumour [4, 5]. Phosphaturic mesenchymal tumour induces renal phosphate decimation with consequent osteomalacia via production and secretion of phosphatonins, commonly fibroblast growth factor 23 (FGF-23). Phosphatonins circumvent reabsorption of phosphate within proximal renal tubules with resultant hypophosphatemia and subsequent bone depletion. Overexpression of FGF-23 is accompanied by fibronectin-1-fibroblast growth factor -1 (FN1-FGFR1) fusion, as discerned by reverse transcriptase polymerase chain reaction (RT-PCR), a feature which is manifest in a subset of neoplasms. As FN1-FGFR1 fusion gene is discerned in around 60% of neoplasms, it is posited to be the pathway of tumouri-genesis [4, 5]. A subset of phosphaturic mesenchymal tumours arising within head and neck harbour FGFR1 chromosomal translocation, an anomaly which can be adequately discerned with fluorescent in situ hybridization (FISH), beneficially adopted in instances of obscure clinical and laboratory manifestations[5].Biochemical assay delineates enhanced bone turnover with hypophosphatemia, hyper-phosphaturia, elevated alkaline phosphatase, normal to minimal circulating levels of 1,25 dihydroxy-vitamin D3 (1,25-[OH]2D3), normal serum calcium and parathyroid hormone (PTH),  findings which are consistent with oncogenic osteomalacia (OO) [5].Phosphate imbalance arises due to excessive expression of phosphatonin or fibroblast growth factor 23 (FGF-23), an ectopic, hormone-like protein secreted by phosphaturic mesenchymal tumour. Enhanced levels of FGF-23 engender phosphate diuresis or phosphaturia which prohibits reabsorption of renal phosphate with consequent hypophosphatemia. Aforesaid manoeuver activates the mobilization of phosphate and calcium from bone into circulating blood as a compensatory mechanism with weakening of bones and consequent fractures. Thus, enhanced expression of FGF-23 is contemplated to be diagnostic of phosphaturic mesenchymal tumour. As FGF-23 inhibits transportation and reabsorption of phosphate within proximal renal tubules, metabolism of vitamin D is influenced with circumvention of conversion of 25- hydroxy-vitamin D to 1,25- dihydroxy vitamin D(5,6).Although precise mechanism of FGF-23 influencing phosphate equilibrium is obscure, it’s function is separate from type IIa sodium phosphate co- transporter (NaPi-2a), a molecule which is regulated by parathyroid hormone (PTH) and significantly constitutes towards renal phosphate reabsorption. Additionally, heparin- like molecules and mitogen-activated protein kinase (MAPK) pathway may be pertinent for activity of FGF-23 [5, 6].

Clinical Features 

The neoplasm is subdivided into four distinct categories as phosphaturic mesenchymal tumour

•mixed connective tissue type which occurs within soft tissue

•osteoblastoma- like

•ossifying fibroma –like

•non ossifying fibroma –like.

Aforesaid categories are discerned within diverse bony sites. Bone and soft tissue lesions appear as a singular entity or as components of a wide histological spectrum [5, 6].A subset of tumours may not demonstrate phosphate diuresis and are labelled as non phosphaturic variant of phosphaturic mesenchymal tumour.Clinical representation is contingent to anatomic distribution of lesions and is manifest by bone pain, multiple bone fractures, muscle tenderness, anomalies of gait, atrophy of proximal muscles and osteopenia [5, 6].Typically, pain and weakness is denominated. Numerous pathologic fractures within the spine, ribs, sacrum or calcaneus can appear. Destructive, osteolytic lesions can arise within incriminated bones. Adolescent subjects can depict rickets- like skeletal deformities.Symptoms of hypophosphatemia or osteomalacia can ensue with chronic pain or pathological fractures. Tumour discernment can be challenging in individuals demonstrating an absence of osteomalacia.Subjects can exhibit chronic lumbar pain with osteopenia of lumbar spine and neck of femur, osteoporosis of diverse bones as distal third of radius and history of atraumatic rib fractures [5, 6].Clinical symptoms are pertinent to implicated tumour site. Also, osteomalacia may not a comprehensive clinical feature. The neoplasm may not be clinically evident at representation and discernment is often delayed. Thus, incriminated subjects can be preliminarily treated for hypophosphatemia and osteoporosis [6].

On examination, dome shaped, symmetrical, non-ulcerated lesions of varying magnitude at intra-oral or diverse sites can be discerned. Phosphaturic mesenchymal tumour can be devoid of accompanying tumour induced osteomalacia (TIO) and manifest normal serum phosphate levels at initial disease representation. Tumour localization with early disease onset, prior to appearance of TIO is pertinent in aforesaid instances [5, 6].

Histological Elucidation  

The mesenchymal, soft tissue or bony, variably cellular neoplasm with an infiltrative perimeter characteristically demonstrates foci of pale grey, flocculent or “grungy” calcification. Tumour magnitude varies from 2 centimetres to 14 centimetres.Infiltrative, hypo-cellular tumefaction is composed of spindle-shaped cells, irregular or miniature foci of “grungy” or flocculent calcification and an encompassing chondromyxoid or osteoid- like matrix with plump, fibroblastic cells [6].Characteristically, proliferating spindle- shaped cells are intermixed with several pseudo-vascular spaces and calcified tumour matrix. Well defined, spindle –shaped, stellate or epithelioid cells with intermixed multinucleated giant cells and circumscribing chondromyxoid matrix denominate the neoplasm. Focal micro- mineralization envelops individual tumour cell. Singular, cellular subtype can predominate in a specific neoplasm.  Zones of flocculent or “grungy” calcification are interspersed within tumour cells [6, 7].Uniform, spindle- shaped cells are benign appearing and demonstrate miniature nuclei, well dispersed nuclear chromatin and indistinct nucleoli.  Haemagiopericytoma-like vascular pattern, distinct foci of “grungy” calcified matrix, mature adipose tissue, focal microcyst formation and haemorrhage, an incomplete perimeter of membranous ossification and zones of metaplastic bone formation are discerned. Osteoid- like matrix or spindle-shaped cellular proliferation can occasionally display an absence of multinucleated giant cells or calcification. Thus, tumour discernment in aforesaid instances is challenging [6, 7].Infiltrative, storiform or fascicular tumour pattern can be observed. Mitotic activity is minimal to absent. Tumour is devoid of atypia.As the significantly vascular neoplasm is characteristically configured by uniform, spindle-shaped cells and numerous, disseminated  multinucleated giant cells enveloped within a chondromyxoid matrix with focal calcification, stromal alterations may vary from myxoid to hyalinised to abundantly collagenous to zones of osteoid-like matrix, admixed punctate or flocculent calcification[6,7].Extensively cellular neoplasm exemplifies numerous, osteoclast –like, multinucleated giant cells. Neighbouring vascular articulations are thin walled and impart a sieve- like appearance to the tumefaction. Foci of red cell extravasation are observed [7].Enhanced tumour cellularity, hyperchromasia or significant cellular pleomorphism is discerned.Cellular neoplasm configured of spindle-shaped cells and osteoid- like matrix is designated as an “ossifying” subtype of phosphaturic mesenchymal tumour [6, 7].Extensive metastatic disease can ensue in advanced cases with mitotic activity ranging from 10 to 25 per 10 high power fields. Aggressive or metastatic tumefaction delineates a proliferative index Ki67 of around ≈ 3% [7].Malignant metamorphoses of phosphaturic mesenchymal tumour is exceptional and challenging to discern as tumour expanses may resemble undifferentiated pleomorphic sarcoma or malignant fibrous histiocytoma.  Malignant conversion is exhibited by nuclear atypia, mitotic figures exceeding >5 per 10 high power fields and enhanced tumour cellularity. Cytological features of the neoplasm may not be predictive of malignant biological behaviour [6, 7].On cytogenetic analysis, an FGFR1 chromosomal translocation is identified in around 80% of tumour cells. Also, complex chromosomal translocations can occur in nearly 42% of cells [7].

Figure 1 Phosphaturic mesenchymal tumour delineating spindled-shaped cellular neoplasm with extensive areas of red cell extravasation and an encompassing collagenous stroma(10).
Figure 2 Phosphaturic mesenchymal tumour exhibiting spindle-shaped and epithelioid cells embedded within a collagenous stroma and occasional multinucleated giant cells (11).
Figure 3 Phosphaturic mesenchymal tumour elucidating abundant spindle-shaped cells intermixed with multinucleated giant cells and enveloping collagenous stroma with focal calcification (12).
Figure 4 Phosphaturic mesenchymal tumour exemplifying epithelioid cells admixed with foci of grungy calcification and a collagenous stroma(13).
Figure 5 Phosphaturic mesenchymal tumour exhibiting dense aggregates of spindle-shaped cells commingled with flocculent calcification and collagenous stroma(14).
Figure 6 Phosphaturic mesenchymal tumour delineating spindle-shaped and epithelioid tumour cells intermixed with flocculent calcification and circumscribing collagen-rich stroma(15).
Figure 7 Phosphaturic mesenchymal tumour demonstrating neoplastic spindle-shaped cells admixed with a collagenous stroma and extensive areas of red cell extravasation (16).
Figure 8 Phosphaturic mesenchymal tumour depicting aggregates of spindle-shaped cells intermingled within a collagenous stroma and foci of flocculent calcification (16).

Immune Histochemical Elucidation 

Phosphaturic mesenchymal tumour is immune reactive to vimentin, thereby indicating a mesenchymal origin. Additionally, the neoplasm is immune reactive to fibroblast growth factor 23 (FGF-23) and dentin matrix protein1 and is immune non-reactive to S100 protein, CD68, CD34, desmin or cytokeratin [3, 4].                                                                                          

Differential Diagnosis

Phosphaturic mesenchymal tumour requires a segregation from cementifying fibroma, myxoid neoplasm, benign chondromesenchymal tumour and giant cell tumour of soft tissue.Soft tissue neoplasms necessitating distinction are solitary fibrous tumour (SFT) and glomangiopericytoma, tumours which recapitulate the vascular configuration of phosphaturic mesenchymal tumour although lack chondromyxoid  matrix and “grungy” or flocculent calcification[8].Bone tumours mandating demarcation are giant cell tumour, chondromyxoid fibroma, chondroma and chordoma[8].Mesenchymal neoplasms engendering oncogenic osteomalacia (OO) are haemangiopericytoma, giant cell tumour of bone and osteosarcoma.

• Giant cell tumour is characterized by proliferation of mononuclear and osteoclast- like giant cells, demonstrating identical nuclear features.  Giant cell tumour of bone demonstrates numerous multinucleated giant cells composed of clear cytoplasm and an agglomeration of roughly 20 nuclei to 25 nuclei. Foci of spindle-shaped cells, typically configuring a storiform pattern and reactive, immature bone is delineated although chondroid matrix of phophaturic mesenchymal tumour is absent, which contains fewer multinucleated giant cells with fewer nuclei [8, 9].

• Chondromyxoid fibroma is a lobulated, well circumscribed lesion comprised of chondroblasts imbued with abundant, eosinophilic cytoplasm. Tumour cells are embedded within a myxoid or poorly configured, hyalinised, cartilaginous stroma. Periphery of tumour nodules delineated enhanced cellularity. Osteoclasts, zones of calcification and spindle-shaped cells are typically exhibited within fibrous septa. Although tumour vascularity is enhanced, blood vessels are disparate from haemangiopericytoma- like vascular configurations of phosphaturic mesenchymal tumour [8, 9].

• Chordoma is an exceptional, malignant bone tumour which arises from midline of foetal notochord.  Dual cellular categories comprising the neoplasm are elliptical cells and physaliferous cells articulating cords and lobules, separated by fibrous tissue septa. Neoplastic cells are enmeshed within an extensively myxoid stroma with foci of calcification and accumulated multinucleated giant cells. However, predominant spindle-shaped cellular component is lacking.  Chordoma is immune reactive to S100 protein, cytokeratin, epithelial membrane antigen (EMA) and brachury [8, 9].

• Cementifying fibroma is discerned within mandible, maxilla or adjunctive facial bones and is a well circumscribed neoplasm containing variable quantities of mineralized matrix simulating cementum. The neoplasm is composed of bland, spindle- shaped cells with foci of calcification, akin to phosphaturic mesenchymal neoplasm [8, 9].

• Haemangiopericytoma displays hyalinised, “staghorn” blood vessels layered by spherical to elliptical cells. Tumefaction lacks “grungy”, flocculent calcification and tumour associated multinucleated giant cells.

• Osteosarcoma histologically simulates phosphaturic mesenchymal tumour, engenders variable quantities of bone or neoplastic osteoid directly from tumour cells and displays cytological atypia. The neoplasm can manifest a significant cartilaginous component. In contrast, phosphaturic mesenchymal tumour is composed of bland, spindle-shaped cells although bone is also generated [8, 9].As osteosarcoma or chondrosarcoma require segregation, typical foci of phosphaturic mesenchymal tumour necessitate recognition and aid differentiation [8].

Investigative Assay

Preoperative biochemical analysis can exhibit  hypo-phosphatemic syndrome concurrent with tumour induced osteomalacia (TIO) and consequent hyperphosphaturia.Enhanced expression of FGF-23 m RNA within neoplastic cells can be demonstrated by chromogenic in situ hybridization (CISH), efficaciously employed upon formalin fixed, paraffin embedded tissue.  Molecular  assay of serum FGF-23 can be beneficially adopted [8, 9].Contemporary FN1-FGFR1 fusion protein, which engenders an upregulation of FGFR1 receptor, can be discerned by reverse transcriptase polymerase chain reaction (RT-PCR), fluorescent in situ hybridization (FISH) or Western blot analysis [9].However, FGFR1 gene can demonstrate an alternative chromosomal translocation pattern which requires the adoption of multiple sequence specific probes, as discerned by reverse transcriptase polymerase chain reaction (RT-PCR). Break apart fluorescent in situ hybridization (FISH) assay can delineate chromosomal translocation of FGFR1 gene with associated partner genes [9].Subjects with TIO can manifest histological features concurrent with phosphaturic mesenchymal tumour and associated head and neck neoplasms such as glomangiopericytoma. Aforesaid tumours warrant adequate discernment with ancillary molecular techniques such as fluorescent in situ hybridization (FISH), which can confirm chromosomal translocation within FGFR1 gene or chromogenic in situ hybridization (CISH), in order to delineate elevated expression of FGF-23.  In situ hybridization performed for FGF-23 demonstrates a diffuse, intense cytoplasmic staining. Aforesaid procedures can be performed on formalin fixed, paraffin embedded tissue [9].Occasionally, appropriate detection of miniature tumours can be challenging. Therefore, cogent methods of assessment such as magnetic resonance imaging (MRI), octreotide scintigraphy and positron emission computerized tomography (PET-CT) can be suitably adopted [9].Cogent factors in disease discernment are age and gender of incriminated individual, tumour localization, initial diagnosis, duration of symptoms, occurrence of tumour induced osteomalacia (TIO) with  serum calcium and phosphate levels [9].

Therapeutic Options

Subjects with extensive tumour induced osteomalacia (TIO) exceeding >10 years are initially managed with supplemental phosphate. Eventually, surgical resection of the neoplasm is curative and alleviates hypophosphatemia [8, 9].Adequate surgical eradication of the neoplasm with a broad perimeter of tumour-free tissue is a preferred mode of therapy. Elevated serum phosphate can occur within weeks following surgery, levels which can return to normal with pertinent surgical excision. Surgical eradication can suitably reverse metabolic effects engendered by the neoplasm.Tumour reoccurrence is absent. Also, clinical behaviour of the neoplasm is unpredictable and lacks concurrence with manifested cytological features. Thus, extended follow up is warranted [8, 9].Neoadjuvant chemotherapy can be concomitantly adopted with extensive surgical extermination, especially with metastatic disease. Adjunctive treatment strategies such as radiotherapy and chemotherapy can be contemplated for treating tumefaction unamenable to surgery [8, 9].

References

Clearly Auctoresonline and particularly Psychology and Mental Health Care Journal is dedicated to improving health care services for individuals and populations. The editorial boards' ability to efficiently recognize and share the global importance of health literacy with a variety of stakeholders. Auctoresonline publishing platform can be used to facilitate of optimal client-based services and should be added to health care professionals' repertoire of evidence-based health care resources.

img

Virginia E. Koenig

Journal of Clinical Cardiology and Cardiovascular Intervention The submission and review process was adequate. However I think that the publication total value should have been enlightened in early fases. Thank you for all.

img

Delcio G Silva Junior

Journal of Women Health Care and Issues By the present mail, I want to say thank to you and tour colleagues for facilitating my published article. Specially thank you for the peer review process, support from the editorial office. I appreciate positively the quality of your journal.

img

Ziemlé Clément Méda

Journal of Clinical Research and Reports I would be very delighted to submit my testimonial regarding the reviewer board and the editorial office. The reviewer board were accurate and helpful regarding any modifications for my manuscript. And the editorial office were very helpful and supportive in contacting and monitoring with any update and offering help. It was my pleasure to contribute with your promising Journal and I am looking forward for more collaboration.

img

Mina Sherif Soliman Georgy

We would like to thank the Journal of Thoracic Disease and Cardiothoracic Surgery because of the services they provided us for our articles. The peer-review process was done in a very excellent time manner, and the opinions of the reviewers helped us to improve our manuscript further. The editorial office had an outstanding correspondence with us and guided us in many ways. During a hard time of the pandemic that is affecting every one of us tremendously, the editorial office helped us make everything easier for publishing scientific work. Hope for a more scientific relationship with your Journal.

img

Layla Shojaie

The peer-review process which consisted high quality queries on the paper. I did answer six reviewers’ questions and comments before the paper was accepted. The support from the editorial office is excellent.

img

Sing-yung Wu

Journal of Neuroscience and Neurological Surgery. I had the experience of publishing a research article recently. The whole process was simple from submission to publication. The reviewers made specific and valuable recommendations and corrections that improved the quality of my publication. I strongly recommend this Journal.

img

Orlando Villarreal

Dr. Katarzyna Byczkowska My testimonial covering: "The peer review process is quick and effective. The support from the editorial office is very professional and friendly. Quality of the Clinical Cardiology and Cardiovascular Interventions is scientific and publishes ground-breaking research on cardiology that is useful for other professionals in the field.

img

Katarzyna Byczkowska

Thank you most sincerely, with regard to the support you have given in relation to the reviewing process and the processing of my article entitled "Large Cell Neuroendocrine Carcinoma of The Prostate Gland: A Review and Update" for publication in your esteemed Journal, Journal of Cancer Research and Cellular Therapeutics". The editorial team has been very supportive.

img

Anthony Kodzo-Grey Venyo

Testimony of Journal of Clinical Otorhinolaryngology: work with your Reviews has been a educational and constructive experience. The editorial office were very helpful and supportive. It was a pleasure to contribute to your Journal.

img

Pedro Marques Gomes

Dr. Bernard Terkimbi Utoo, I am happy to publish my scientific work in Journal of Women Health Care and Issues (JWHCI). The manuscript submission was seamless and peer review process was top notch. I was amazed that 4 reviewers worked on the manuscript which made it a highly technical, standard and excellent quality paper. I appreciate the format and consideration for the APC as well as the speed of publication. It is my pleasure to continue with this scientific relationship with the esteem JWHCI.

img

Bernard Terkimbi Utoo

This is an acknowledgment for peer reviewers, editorial board of Journal of Clinical Research and Reports. They show a lot of consideration for us as publishers for our research article “Evaluation of the different factors associated with side effects of COVID-19 vaccination on medical students, Mutah university, Al-Karak, Jordan”, in a very professional and easy way. This journal is one of outstanding medical journal.

img

Prof Sherif W Mansour

Dear Hao Jiang, to Journal of Nutrition and Food Processing We greatly appreciate the efficient, professional and rapid processing of our paper by your team. If there is anything else we should do, please do not hesitate to let us know. On behalf of my co-authors, we would like to express our great appreciation to editor and reviewers.

img

Hao Jiang

As an author who has recently published in the journal "Brain and Neurological Disorders". I am delighted to provide a testimonial on the peer review process, editorial office support, and the overall quality of the journal. The peer review process at Brain and Neurological Disorders is rigorous and meticulous, ensuring that only high-quality, evidence-based research is published. The reviewers are experts in their fields, and their comments and suggestions were constructive and helped improve the quality of my manuscript. The review process was timely and efficient, with clear communication from the editorial office at each stage. The support from the editorial office was exceptional throughout the entire process. The editorial staff was responsive, professional, and always willing to help. They provided valuable guidance on formatting, structure, and ethical considerations, making the submission process seamless. Moreover, they kept me informed about the status of my manuscript and provided timely updates, which made the process less stressful. The journal Brain and Neurological Disorders is of the highest quality, with a strong focus on publishing cutting-edge research in the field of neurology. The articles published in this journal are well-researched, rigorously peer-reviewed, and written by experts in the field. The journal maintains high standards, ensuring that readers are provided with the most up-to-date and reliable information on brain and neurological disorders. In conclusion, I had a wonderful experience publishing in Brain and Neurological Disorders. The peer review process was thorough, the editorial office provided exceptional support, and the journal's quality is second to none. I would highly recommend this journal to any researcher working in the field of neurology and brain disorders.

img

Dr Shiming Tang

Dear Agrippa Hilda, Journal of Neuroscience and Neurological Surgery, Editorial Coordinator, I trust this message finds you well. I want to extend my appreciation for considering my article for publication in your esteemed journal. I am pleased to provide a testimonial regarding the peer review process and the support received from your editorial office. The peer review process for my paper was carried out in a highly professional and thorough manner. The feedback and comments provided by the authors were constructive and very useful in improving the quality of the manuscript. This rigorous assessment process undoubtedly contributes to the high standards maintained by your journal.

img

Raed Mualem

International Journal of Clinical Case Reports and Reviews. I strongly recommend to consider submitting your work to this high-quality journal. The support and availability of the Editorial staff is outstanding and the review process was both efficient and rigorous.

img

Andreas Filippaios

Thank you very much for publishing my Research Article titled “Comparing Treatment Outcome Of Allergic Rhinitis Patients After Using Fluticasone Nasal Spray And Nasal Douching" in the Journal of Clinical Otorhinolaryngology. As Medical Professionals we are immensely benefited from study of various informative Articles and Papers published in this high quality Journal. I look forward to enriching my knowledge by regular study of the Journal and contribute my future work in the field of ENT through the Journal for use by the medical fraternity. The support from the Editorial office was excellent and very prompt. I also welcome the comments received from the readers of my Research Article.

img

Dr Suramya Dhamija

Dear Erica Kelsey, Editorial Coordinator of Cancer Research and Cellular Therapeutics Our team is very satisfied with the processing of our paper by your journal. That was fast, efficient, rigorous, but without unnecessary complications. We appreciated the very short time between the submission of the paper and its publication on line on your site.

img

Bruno Chauffert

I am very glad to say that the peer review process is very successful and fast and support from the Editorial Office. Therefore, I would like to continue our scientific relationship for a long time. And I especially thank you for your kindly attention towards my article. Have a good day!

img

Baheci Selen

"We recently published an article entitled “Influence of beta-Cyclodextrins upon the Degradation of Carbofuran Derivatives under Alkaline Conditions" in the Journal of “Pesticides and Biofertilizers” to show that the cyclodextrins protect the carbamates increasing their half-life time in the presence of basic conditions This will be very helpful to understand carbofuran behaviour in the analytical, agro-environmental and food areas. We greatly appreciated the interaction with the editor and the editorial team; we were particularly well accompanied during the course of the revision process, since all various steps towards publication were short and without delay".

img

Jesus Simal-Gandara

I would like to express my gratitude towards you process of article review and submission. I found this to be very fair and expedient. Your follow up has been excellent. I have many publications in national and international journal and your process has been one of the best so far. Keep up the great work.

img

Douglas Miyazaki

We are grateful for this opportunity to provide a glowing recommendation to the Journal of Psychiatry and Psychotherapy. We found that the editorial team were very supportive, helpful, kept us abreast of timelines and over all very professional in nature. The peer review process was rigorous, efficient and constructive that really enhanced our article submission. The experience with this journal remains one of our best ever and we look forward to providing future submissions in the near future.

img

Dr Griffith

I am very pleased to serve as EBM of the journal, I hope many years of my experience in stem cells can help the journal from one way or another. As we know, stem cells hold great potential for regenerative medicine, which are mostly used to promote the repair response of diseased, dysfunctional or injured tissue using stem cells or their derivatives. I think Stem Cell Research and Therapeutics International is a great platform to publish and share the understanding towards the biology and translational or clinical application of stem cells.

img

Dr Tong Ming Liu

I would like to give my testimony in the support I have got by the peer review process and to support the editorial office where they were of asset to support young author like me to be encouraged to publish their work in your respected journal and globalize and share knowledge across the globe. I really give my great gratitude to your journal and the peer review including the editorial office.

img

Husain Taha Radhi

I am delighted to publish our manuscript entitled "A Perspective on Cocaine Induced Stroke - Its Mechanisms and Management" in the Journal of Neuroscience and Neurological Surgery. The peer review process, support from the editorial office, and quality of the journal are excellent. The manuscripts published are of high quality and of excellent scientific value. I recommend this journal very much to colleagues.

img

S Munshi

Dr.Tania Muñoz, My experience as researcher and author of a review article in The Journal Clinical Cardiology and Interventions has been very enriching and stimulating. The editorial team is excellent, performs its work with absolute responsibility and delivery. They are proactive, dynamic and receptive to all proposals. Supporting at all times the vast universe of authors who choose them as an option for publication. The team of review specialists, members of the editorial board, are brilliant professionals, with remarkable performance in medical research and scientific methodology. Together they form a frontline team that consolidates the JCCI as a magnificent option for the publication and review of high-level medical articles and broad collective interest. I am honored to be able to share my review article and open to receive all your comments.

img

Tania Munoz

“The peer review process of JPMHC is quick and effective. Authors are benefited by good and professional reviewers with huge experience in the field of psychology and mental health. The support from the editorial office is very professional. People to contact to are friendly and happy to help and assist any query authors might have. Quality of the Journal is scientific and publishes ground-breaking research on mental health that is useful for other professionals in the field”.

img

George Varvatsoulias

Dear editorial department: On behalf of our team, I hereby certify the reliability and superiority of the International Journal of Clinical Case Reports and Reviews in the peer review process, editorial support, and journal quality. Firstly, the peer review process of the International Journal of Clinical Case Reports and Reviews is rigorous, fair, transparent, fast, and of high quality. The editorial department invites experts from relevant fields as anonymous reviewers to review all submitted manuscripts. These experts have rich academic backgrounds and experience, and can accurately evaluate the academic quality, originality, and suitability of manuscripts. The editorial department is committed to ensuring the rigor of the peer review process, while also making every effort to ensure a fast review cycle to meet the needs of authors and the academic community. Secondly, the editorial team of the International Journal of Clinical Case Reports and Reviews is composed of a group of senior scholars and professionals with rich experience and professional knowledge in related fields. The editorial department is committed to assisting authors in improving their manuscripts, ensuring their academic accuracy, clarity, and completeness. Editors actively collaborate with authors, providing useful suggestions and feedback to promote the improvement and development of the manuscript. We believe that the support of the editorial department is one of the key factors in ensuring the quality of the journal. Finally, the International Journal of Clinical Case Reports and Reviews is renowned for its high- quality articles and strict academic standards. The editorial department is committed to publishing innovative and academically valuable research results to promote the development and progress of related fields. The International Journal of Clinical Case Reports and Reviews is reasonably priced and ensures excellent service and quality ratio, allowing authors to obtain high-level academic publishing opportunities in an affordable manner. I hereby solemnly declare that the International Journal of Clinical Case Reports and Reviews has a high level of credibility and superiority in terms of peer review process, editorial support, reasonable fees, and journal quality. Sincerely, Rui Tao.

img

Rui Tao

Clinical Cardiology and Cardiovascular Interventions I testity the covering of the peer review process, support from the editorial office, and quality of the journal.

img

Khurram Arshad

Clinical Cardiology and Cardiovascular Interventions, we deeply appreciate the interest shown in our work and its publication. It has been a true pleasure to collaborate with you. The peer review process, as well as the support provided by the editorial office, have been exceptional, and the quality of the journal is very high, which was a determining factor in our decision to publish with you.

img

Gomez Barriga Maria Dolores

The peer reviewers process is quick and effective, the supports from editorial office is excellent, the quality of journal is high. I would like to collabroate with Internatioanl journal of Clinical Case Reports and Reviews journal clinically in the future time.

img

Lin Shaw Chin

Clinical Cardiology and Cardiovascular Interventions, I would like to express my sincerest gratitude for the trust placed in our team for the publication in your journal. It has been a true pleasure to collaborate with you on this project. I am pleased to inform you that both the peer review process and the attention from the editorial coordination have been excellent. Your team has worked with dedication and professionalism to ensure that your publication meets the highest standards of quality. We are confident that this collaboration will result in mutual success, and we are eager to see the fruits of this shared effort.

img

Maria Dolores Gomez Barriga

Dear Dr. Jessica Magne, Editorial Coordinator 0f Clinical Cardiology and Cardiovascular Interventions, I hope this message finds you well. I want to express my utmost gratitude for your excellent work and for the dedication and speed in the publication process of my article titled "Navigating Innovation: Qualitative Insights on Using Technology for Health Education in Acute Coronary Syndrome Patients." I am very satisfied with the peer review process, the support from the editorial office, and the quality of the journal. I hope we can maintain our scientific relationship in the long term.

img

Dr Maria Dolores Gomez Barriga

Dear Monica Gissare, - Editorial Coordinator of Nutrition and Food Processing. ¨My testimony with you is truly professional, with a positive response regarding the follow-up of the article and its review, you took into account my qualities and the importance of the topic¨.

img

Dr Maria Regina Penchyna Nieto

Dear Dr. Jessica Magne, Editorial Coordinator 0f Clinical Cardiology and Cardiovascular Interventions, The review process for the article “The Handling of Anti-aggregants and Anticoagulants in the Oncologic Heart Patient Submitted to Surgery” was extremely rigorous and detailed. From the initial submission to the final acceptance, the editorial team at the “Journal of Clinical Cardiology and Cardiovascular Interventions” demonstrated a high level of professionalism and dedication. The reviewers provided constructive and detailed feedback, which was essential for improving the quality of our work. Communication was always clear and efficient, ensuring that all our questions were promptly addressed. The quality of the “Journal of Clinical Cardiology and Cardiovascular Interventions” is undeniable. It is a peer-reviewed, open-access publication dedicated exclusively to disseminating high-quality research in the field of clinical cardiology and cardiovascular interventions. The journal's impact factor is currently under evaluation, and it is indexed in reputable databases, which further reinforces its credibility and relevance in the scientific field. I highly recommend this journal to researchers looking for a reputable platform to publish their studies.

img

Dr Marcelo Flavio Gomes Jardim Filho

Dear Editorial Coordinator of the Journal of Nutrition and Food Processing! "I would like to thank the Journal of Nutrition and Food Processing for including and publishing my article. The peer review process was very quick, movement and precise. The Editorial Board has done an extremely conscientious job with much help, valuable comments and advices. I find the journal very valuable from a professional point of view, thank you very much for allowing me to be part of it and I would like to participate in the future!”

img

Zsuzsanna Bene

Dealing with The Journal of Neurology and Neurological Surgery was very smooth and comprehensive. The office staff took time to address my needs and the response from editors and the office was prompt and fair. I certainly hope to publish with this journal again.Their professionalism is apparent and more than satisfactory. Susan Weiner

img

Dr Susan Weiner

My Testimonial Covering as fellowing: Lin-Show Chin. The peer reviewers process is quick and effective, the supports from editorial office is excellent, the quality of journal is high. I would like to collabroate with Internatioanl journal of Clinical Case Reports and Reviews.

img

Lin-Show Chin

My experience publishing in Psychology and Mental Health Care was exceptional. The peer review process was rigorous and constructive, with reviewers providing valuable insights that helped enhance the quality of our work. The editorial team was highly supportive and responsive, making the submission process smooth and efficient. The journal's commitment to high standards and academic rigor makes it a respected platform for quality research. I am grateful for the opportunity to publish in such a reputable journal.

img

Sonila Qirko

My experience publishing in International Journal of Clinical Case Reports and Reviews was exceptional. I Come forth to Provide a Testimonial Covering the Peer Review Process and the editorial office for the Professional and Impartial Evaluation of the Manuscript.

img

Luiz Sellmann