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[Arterial embolization in hemorrhagic renal angiomyolipoma]
S M Moudouni1, I En-Nia, J J Patard
1Service d'Urologie, Hôpital Pontchaillou, Rennes, France. s_moudouni@yahoo.fr
Objective:
Renal angiomyolipoma (AML) is a rare benign tumour (2-3%) comprising variable proportions of an adipose component, which is often the most abundant, a smooth muscle contingent and a vascular contingent. The objective of this study is to demonstrate the value of embolization of bleeding angiomyolipomas.
Material And Methods:
2 patient, aged 22 and 62 years, presented with perirenal haematoma secondary to bleeding angiomyolipoma and were treated by selective arterial embolization.
Results:
In one case, partial nephrectomy was subsequently performed because of the size of the angiomyolipoma (10 cm). In the other case, attempted partial nephrectomy at 3 months failed due to the proximity of the renal hilum and nephrectomy was performed.
Conclusion:
Beyond a diameter of 4 cm, the risk of perirenal haemorrhage is proportional to the size of the tumour. When surgery is required, selective arterial embolization is the first stage of treatment allowing partial nephrectomy in the majority of cases.