Echinococcus of the urinary tract: radiologic findings.
Echinococcal involvement of the urinary tract is extremely rare. We present 11 such cases, 10 with renal and 1 with bladder involvement. Clinical and laboratory findings were nonspecific. Calcification was present in all but 1 case. The excretory urogram and retrograde pyelogram demonstrated parenchymal soft-tissue masses causing pressure on and dilatation of the collecting system. Angiography in 3 cases showed the masses to be avascular. The ultrasound findings of a multicystic lesion with mixed echogenicity were typical of echinococcal cysts, while a CT scan in 1 patient showed a cyst with densely calcified border. The combined findings of these different modalities aid greatly in establishing the correct diagnosis.
D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D004443:Echinococcosis / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007674:Kidney Diseases / Q000000981:diagnostic imaging*; D052177:Kidney Diseases, Cystic / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D012077:Renal Artery / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography; D001745:Urinary Bladder Diseases / Q000000981:diagnostic imaging*; D014567:Urography