Spontaneous Renal Artery Pseudoaneurysm Treated By Arterial Embolization

Case Report | DOI: https://doi.org/10.31579/2642-1674/009

Spontaneous Renal Artery Pseudoaneurysm Treated By Arterial Embolization

  • Mohammed Habib ID 1*
  • Majdy Ayyad 1
  • Mohammed Balosha 2

1* Department of dermatology, Saudi German hospitals and clinics, Hessa Street 331 West, Al Barsha 3, Exit 36 Sheikh Zayed Road, Opposite of American School, Dubai, United Arab Emirates.

1 Cardiology Department- Alshifa Hospital- Gaza- Palestine, Israel.

2 Radiology Department- Alshifa Hospital- Gaza- Palsetine, Israel.

*Corresponding Author: Mohammed Habib, Cardiology Department-Alshifa Hospital- Gaza- Palestine, Israel

Citation: Mohammed H, Majdy A, Mohammed B (2020).Spontaneous Renal Artery Pseudoaneurysm Treated By Arterial Embolization.J Clin Imag. Interven Radiology 3(1); Doi: 10.31579/2642-1674/009

Copyright: ©2020 Mohammed H, 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: 08 November 2019 | Accepted: 28 November 2019 | Published: 05 January 2020

Keywords: renal artery pseudoaneurysms; vascular plug embolization

Abstract

Renal artery pseudoaneurysm is a rare vascular lesion. It is found with increasing frequency as a result of unrelated abdominal imaging or on work-up for hypertension. The pseudoaneurysm can be defined as a pulsatile hematoma that communicates with the artery through a small hole in the arterial wall. However, the rupture of pseudoaneurysmis the most dreaded complication because it causes death. There are many causes of renal artery pseudoaneurysm and are generally related to renal biopsy, nephrectomy or percutaneous procedures. In addition, there is a relationship with penetrating traumas and, more rarely, with blunt traumas. We report a case of renal artery pseudoaneurysm treated successfully with vascular plug embolization. A 22-year-old woman with hypertension presented with an incidental left renal artery pseudoaneurysm measuring 35x23 mm. We successfully performed endovascular treatment with vascular plug embolization without any complications.

 

Introduction

Renal arterial pseudoaneurysm is a haematoma contained by the surrounding structures outside the vessel wall.(1) The incidence is low, the overall incidence ranges between 0.01% and 1% (2). This increases to 2.5% when only patients with systemic  hypertension are considered (3).

The renal artery pseudoaneurysm etiologically are associated with intervention procedures such as partial nephrectomy, percutaneous procedures, renal biopsy. But can be related to penetrating trauma and  more rarely  blunt trauma.(4-5). Although it may be spontaneous as described in this case without history of trauma, renal surgery, percutaneous procedures, as well as inflammatory and neoplastic processes within the kidney.

Case report

A 22-year-old woman visited the cardiology department with headache and systemic hypertension abdominal pain and bloody stool. She had been taking antihypertensive medicine for 2 years, and her blood pressure was well uncontrolled. On admission, her vital signs were as follows: blood pressure,178/110 mmHg; heart rate 78 bpm; respiratory rate, 20 bpm; and body temperature,37.5 and physical examination did not reveal any abnormalities. Her complete blood count revealed the following: hemoglobin level,11.9 g/dL; white blood cell count, 6,580/mm3;and platelet count, 218,000/mm3. A basic metabolic panel revealed no abnormalities; her creatinine level was 0.97 mg/dL. She  take valsartan/hydrochlorothiazide (160/25)mg tablet and  5 mg bisoprolol medication to control high blood pressure She was not any past medical histories including trauma, renal surgery, percutaneous procedures, as well as inflammatory and neoplastic processes within the kidney .

Her abdominal CT angiography revealed an 2.3x3.5 cm sized left renal artery saccular pseudoaneurysm. A left renal artery pseudoaneurysm was observed near the proximal part of the inferior branch on the angiogram.

Figure1: CT angiography revealed an2.3x3.5 cm sized left renal artery saccular pseudoaneurysm.

Selective left renal angiography was done and suggested pseudoaneurysm at the proximal inferior branch of the left renal artery . We inserted a vascular plug 6x7 mm and deployed   at the proximal inferior branch of the left renal artery (Fig. 2,3,4). There were no complications of endovascular treatment.

Figure 2 : Selective left renal angiography was done and suggested pseudoaneurysm at the proximal inferior branch of the left renal artery.
Figure 3:  vascular plug deployment at the neck of pseudoaneurysm

Discussion

The incidence of renal artery pseudoaneurysm in patient with hypertension unresponsive to medical therapy can be as high as 39% (6) the etiologies of pseudoaneurysm are long standing untreated hypertension,  surgical manipulation (open, laparoscopic, and/or endovascular)  blunt and penetrating trauma, infectious angiomyolipomas (i.e., mycotic) ,polyarteritis nodosa , malignancy, radiation, and/or cyclophosphamide use  (7,8). The risk of rupture is thought to vary inversely with size, and most investigators agree that an aneurysm exceeding 2 cm is more likely to undergo rupture  and interventions are indicated in pseudoaneurysms greater than 2 cm, or when associated with complications such as severe hemorrhage and renovascular hypertension. (9)

Indications for treatment include uncontrolled hypertension, progressive enlargement, with size >2 to 2.5 cm or size >1 cm in a female of childbearing age (10). Currently, endovascular r treatments include embolization (coils, gelfom or  alcohol) or stenting across the aneurysm is the intervention of choice in elective circumstances (11).

Conclusion

We report a case of left renal artery pseudoaneurysm  with severe uncontrolled systemic hypertension in a young  female who did not control high blood pressure for a 2 years was treated successfully of vascular plug system. To the best of our knowledge this is the first report of a spontaneous renal artery pseudoaneurysm with no predisposing factors and was managed by selective arteriography and embolisation using vascular plug.

References

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