title: Parapelvic cysts: appearance on CT and sonography.
abstract: The computed tomographic (CT) and sonographic appearance of 16 patients with parapelvic cysts were retrospectively reviewed. CT revealed a water-density renal hilar mass that did not fill with contrast material after intravenous injection. Sonography demonstrated a cystic renal hilar mass with echogenic walls that did not communicate with the collecting system. The differential diagnosis of renal hilar masses as seen by CT and sonography is discussed.
mesh_terms: D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000175:diagnosis; D007674:Kidney Diseases / Q000175:diagnosis; D052177:Kidney Diseases, Cystic / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D007690:Polycystic Kidney Diseases / Q000175:diagnosis*; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography