title: Circumaortic renal collar. A potentially hazardous anomaly of the left renal vein.
abstract: The circumaortic renal collar is a potentially hazardous anomaly of the left renal vein. Failure to recognize the dorsal component during retroperitoneal surgery may lead to hemorrhage, nephrectomy or death. The angiographer can make a significant contribution in documenting this anomally in patients who are candidates for surgery in this area.
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012082:Renal Veins / Q000002:abnormalities* / Q000000981:diagnostic imaging