Varicosity of the left renal ascending lumbar communicant vein: a pitfall in CT diagnosis.
An anastomosis between the left renal and left ascending lumbar veins may appear as a mass on CT scans due to a varicosity where the veins separate. Intravenous injection of contrast material reveals the vascular nature of the mass.
D000328:Adult; D006801:Humans; D007668:Kidney / Q000098:blood supply*; D008297:Male; D012082:Renal Veins / Q000002:abnormalities*; D014057:Tomography, X-Ray Computed; D014648:Varicose Veins / Q000000981:diagnostic imaging*