title: Renal arteriovenous malformation presenting as a mass lesion.
abstract: Arteriovenous malformations of the kidney are definitively diagnosed by selective arteriography (1). The following case is unique in that it presented as an avascular mass and the lesion itself could not be demonstrated angiographically.
mesh_terms: D000792:Angiography; D001165:Arteriovenous Malformations / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007668:Kidney / Q000098:blood supply*; D008875:Middle Aged; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography