[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.
The Department of Urology, Chigasaki Municipal Hospital.
Yoichi
Y
Tamura
Yasushi
Y
Yumura
Yutaka
Y
Senga
Akihiko
A
Goto
Toshio
T
Sakuramoto
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