title: An unusual case of persistent renal collar in a human adult male.
abstract: There are relatively few reports in the literature on accessory renal veins, and particularly that anomaly described as a persistent renal collar. The present paper describes a case in which a left renal vein is encountered in a human adult, both anterior and posterior to the abdominal aorta, though without a persistent left inferior vena cava.
mesh_terms: D000328:Adult; D001012:Aorta, Abdominal / Q000196:embryology / Q000473:pathology; D006801:Humans; D008297:Male; D012082:Renal Veins / Q000002:abnormalities* / Q000196:embryology / Q000473:pathology; D014682:Vena Cava, Inferior / Q000196:embryology / Q000473:pathology