Embolization of a bleeding aneurysm in a patient with spontaneous perirenal haematoma due to Polyarteritis nodosa.

OBJECTIVE To report a rare case of a Spontaneous perirenal haematoma due to Polyarteritis nodosa treated with a selective embolización of the bleeding aneurysm. Polyarteritis nodosa (PAN) is one of a spectrum of diseases thet belongs to the pathologic category of necrotizing vasculitis. Spontaneous perirenal haematoma (SPH) is an unusual complication of PAN. METHODS We are introducing a patient with SPH due to PAN. RESULTS The patient was treated with embolization of a left renal bleeding aneurysm of the upper interlobar artery. Pan is the most frequent vascular disease associated with spontaneous renal hematoma. Therefore the diagnosis may be difficult to determine. CONCLUSIONS A selective embolization of the bleeding aneurysm is a therapeutical maneuver to be considered.