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Case Report | DOI: https://doi.org/10.31579/2690-1897/085
*Corresponding Author: Marina Gabrielle Epstein, General, Gastric and Minimally Invasive Surgery – Albert Einstein Jewish Hospital, Brazil.
Citation: Marina Gabrielle Epstein, Vladimir Schraibman, Luis Roberto Manzione Nadal, Gabriel Maccapani, Marília Fernandes and Franco Milan Sapuppo (2021) Conservative Treatment of Idiopathic Spontaneus Pneumoperitoneum. J, Surgical Case Reports and Images 4(7); DOI: 10.31579/2690-1897/085
Copyright: © 2021, Marina Gabrielle Epstein, This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Received: 12 July 2021 | Accepted: 10 August 2021 | Published: 09 September 2021
Keywords: pneumoperitoneum; abdominal pain; idiopathic pneumoperitoneum, conservative
Pneumoperitoneum is often caused by perforation of hollow viscera, but when an etiology is not identified, it is said to be idiopathic. It is considered a rare condition, as in the last 30 years, just over 20 cases have been described. We present a rare case of an incidental finding of a pneumoperitoneum in a 36 years old female patient.
Idiopathic spontaneous pneumoperitoneum (ISP) is an unusual condition, which is characterized by the presence of gas in the intraperitoneal space without gastrointestinal perforation. There is no clear etiology for it [1, 2].
This study reports an unusual presentation of an idiopathic pneumoperitoneum which has put the surgeon in a massive diagnostic and therapeutic challenge with a 36 year old patient with spontaneous idiopathic pneumoperitoneum. In this case, the patient was admitted for strict clinical observation and chosen for non-surgical treatment.
A 36-year-old female patient searched emergency care due to chest and shoulder pain associated with mild abdominal discomfort. She denied vomiting, altered bowel habits, eating food with a possible foreign body (toothpick/bones). Personal history reported a laparoscopic Nissen fundoplication 9 months ago due to gastroesophageal reflux only.
The patient reported having sexual intercourse 96 hours before the onset of symptoms.On examination, she was in good general condition, hemodynamically stable, with no changes in cardiac and pulmonary auscultation, flabby abdomen, little pain on diffuse palpation, sudden negative decompression negative.
The hospital's chest pain protocol was opened. ECG and cardiac enzymes unchanged. Chest X-rays showed pneumoperitoneum (Figure 1).
In view of the findings, chest and total abdomen CT without contrast were requested which showed: topical fundoplication, mild pneumomediastinum, pneumoperitoneum, more evident in the upper abdomen, and in perigastric / periduodenal planes without free fluid (figure 2).
There were no signs of gynecological disease or gastrointestinal tract perforation
In view of the findings, the patient was asked to complete the exam with oral contrast and was later submitted to a new tomography and there was no contrast extravasation. Laboratory tests such as blood count, C-reactive protein, kidney and liver function showed no changes.
Based on these findings, we diagnosed the patient with ISP. She was treated conservatively with close observation and serial abdominal examination. She was admitted with intravenous antibiotic therapy, absolute fasting and parenteral diet.
Next day, the patient no longer had abdominal discomfort and shoulder pain. CBC and PCR remained unchanged. A new control tomography was performed after 48 hours and a decrease in pneumoperitoneum was noticed. Upper gastrointestinal endoscopy was performed 96 hours after admission without signs of micro perforation or changes in fundoplication.
The patient was given a liquid diet and accepted it without complications. She was discharged asymptomatic from the hospital after 7 days under follow-up.
Pneumoperitoneum, in general, originates from surgical and non-surgical causes, mostly due to perforated gastric or duodenal ulcer, but in 10% of cases, it may be of idiopathic etiology, characterized by a rare condition, with an average than twenty reports in the literature [1, 2, 3].
Intra-thoraciccauses include thoracic trauma, post-cardio-pulmonary resuscitation and excessive mechanical ventilation with high peak inspiratory pressures [3, 4]. In these cases, pneumoperitoneum is usually a result of raised intra-thoracic pressure, which leads to the leakage of intrathoracic air through microscopic pleural and diaphragmatic defects, and pneumomediastinum often co-exists.In such cases, management of pneumoperitoneum is typically conservative. In the female population, gynaecological causes such as sexual intercourse, vaginal douching, vaginal insufflation, and pelvic inflammatory disease, should be considered and are usually a result of anatomical communication between the peritoneal cavity and the fallopian tubes and endometrium [4].
Finally, there exists a group of patients with pneumoperitoneum who have no clear etiology or risk factors; these are true cases of idiopathic pneumoperitoneum. Our patient is an exceedingly rare case of idiopathic pneumoperitoneum who had very few abdominal symptoms and a completely innocent physical examination.
It is imperative to carry out an adequate anamnesis in order to distinguish between surgical and non-surgical conditions, in relation to the pneumoperitoneum [5].
There is the question of the presence or not of peritonitis in the clinical examination, which plays a central role in the management of the case. The computed tomography exam may point out the underlying causes for the pathology. This exam has an accuracy of 86% in relation to the identification of perforations [5]. The absence of peritonitis allows the possibility of continuing with conservative treatment, maintaining strict observation of patient. There is documentation in the medical literature of successful conservative treatment, with measures such as intravenous antibiotics, fasting, total parenteral nutrition, biochemical follow-up exams and serial imaging exams [5].
ISP it a benign condition, but is not a simple diagnosis and should be considered as one of exclusion after discarding surgical causes. It is important to have a notion of the occurrence of cases like this so that the diagnosis can be made with certainty. Imaging exams help to avoid unnecessary laparotomies.
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