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Case Reports
. 2021 Nov 2:40:101926.
doi: 10.1016/j.eucr.2021.101926. eCollection 2022 Jan.

Inverted urothelial papilloma: A case report

Raj A Kumar  1 , Nikhil Batra  2 , Michael Maidaa  2 , Kevin Campbell  2 , Jon Frankel  3 , Udaya Kumar  3
Affiliations
Case Reports

Inverted urothelial papilloma: A case report

Raj A Kumar et al. Urol Case Rep. .

Abstract

Inverted urothelial papilloma (IUP) is an unusual tumor that typically presents as a non-invasive, endophytic urothelial neoplasm. Though fairly well described in the bladder, IUP of the upper urinary tract is fairly rare, with only 68 cases documented in English language literature. Our patient presented with an IUP of the distal left ureter and was treated with a distal ureterectomy and reimplant of the ureter with a psoas hitch.

Keywords: Hematuria; Inverted urothelial papilloma; Upper urinary tract.

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Figures

Fig. 1
Fig. 1
Coronal image in the excretory phase.
Fig. 2
Fig. 2
Excised specimen measuring 3 cm in diameter.
Fig. 3
Fig. 3
Tumor histology showing areas of papillary and sessile proliferation of urothelial cells showing minimal atypia. (A) Displays low power histology and the architecture of an inverted urothelial papilloma involving downward growth lined by urothelium. (B) Medium power histology showing cytologic characteristics.
See this image and copyright information in PMC

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