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Case Reports
. 2020 May 20:32:101271.
doi: 10.1016/j.eucr.2020.101271. eCollection 2020 Sep.

Villous adenoma of the urachus obscuring urachal adenocarcinoma: A case report

Yuri Nishikawa  1 , Kuniyasu Muraoka  1 , Tadahiro Isoyama  1
Affiliations
Case Reports

Villous adenoma of the urachus obscuring urachal adenocarcinoma: A case report

Yuri Nishikawa et al. Urol Case Rep. .

Abstract

We report a case of a 78-year-old woman with a urachal tumor of the bladder wall. We performed a biopsy and revealed the tumor as a villous adenoma. We excised the tumor by partial cystectomy together with the umbilical ligament, because it was possible there was a co-existing malignancy. The tumor turned out to be villous adenoma and a urachal adenocarcinoma. Because the superficial section of the tumor consisted only of adenoma, a biopsy could not identify the malignant component. Villous adenoma of the urinary tract or the urachus is very rare, and it is considered as an intestinal premalignancy.

Keywords: Urachal adenocarcinoma; Villous adenoma.

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Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
Gross specimen showing the papillary urachal tumor of the bladder dome by cystoscopy.
Fig. 2
Fig. 2
A) Hematoxylin-eosin staining of a surgical specimen showing superficial villous adenoma (VA) and a deeper layer of mucinous adenocarcinoma (MA) infiltrating the muscle (M). B) An enlarged image of A.
See this image and copyright information in PMC

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