title: Computed tomography appearance of fused (horseshoe) kidney.
abstract: Horseshoe kidneys occur approximately once in every 400-500 births. We present three cases of renal fusion anomalies with their computed tomography scans. In patients with little retroperitoneal fat the presence of a renal fusion anomaly can mimic a retroperitoneal mass. Horseshoe kidneys can be suspected by the characteristic anteromedial placement of the renal hilar structures and by enhancement after contrast infusion. An intravenous pyelogram will confirm the finding.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007668:Kidney / Q000002:abnormalities* / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed