title: Spontaneous perirenal haematoma secondary to polyarteritis nodosa.
abstract: Spontaneous perirenal haematoma (SPH) is an unusual but serious complication of polyarteritis nodosa (PAN). We present 3 patients with PAN-associated SPH. One was diagnosed pre-operatively and underwent emergency nephrectomy in order to stop the persistent bleeding; the second patient had surgical drainage of the haematoma and the third recovered without undergoing surgery. The diagnosis is discussed.
mesh_terms: D000328:Adult; D006406:Hematoma / Q000000981:diagnostic imaging / Q000209:etiology*; D006801:Humans; D007674:Kidney Diseases / Q000000981:diagnostic imaging / Q000209:etiology*; D008297:Male; D010488:Polyarteritis Nodosa / Q000150:complications*; D011859:Radiography; D012077:Renal Artery / Q000000981:diagnostic imaging