[Spontaneous perirenal haematoma occurring during 1 familial mediterranean fever. 3 cases (author's transl)].

A perirenal haematoma, associated with the presence of renal micro-aneurysms, developed in three patients with periodic syndrome. In one of the cases, the histology of a subcutaneous nodule confirmed the diagnosis of periarteritis nodosa. This emphasies the importance of vascular lesions in familial mediterranean fever.