[A case report of cholesteatoma of the ureter difficult to distinguish from malignant ureter tumor].
An 81-year-old woman consulted us with low abdominal pain. A computed tomography (CT) image showed left hydronephrosis and a mass without calcification at the lower portion of the left ureter. A retrograde urogram showed an irregular filling defect at the lower portion of the left ureter that suggested an obstruction by a malignant ureter tumor. Therefore, total nephroureterectomy was performed. The surgical specimen showed a mass with a membrane, which could be detached easily from the ureter wall. The ureter wall showed hyperkeratosis upon histological examination, and the mass was diagnosed as cholesteatoma.
Tamura
Yoichi
Y
The Department of Urology, Chigasaki Municipal Hospital.
Yumura
Yasushi
Y
Senga
Yutaka
Y
Goto
Akihiko
A
Sakuramoto
Toshio
T
D000368:Aged; D000369:Aged, 80 and over; D002781:Cholesteatoma / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D014515:Ureteral Diseases / Q000175:diagnosis* / Q000473:pathology; D014516:Ureteral Neoplasms / Q000175:diagnosis