Ectopic Decidual Reaction in the Urinary Bladder Presenting as a Vesical Tumor

Tomasz Szopiński, Szopiński TR, Tomasz R Szopiński, Iwona Sudoł‐Szopińska, Iwona Sudoł-Szopińska, Tomasz Dzik, Dzik T, Andrzej Borówka, Borówka A
Urology · 2009 · vol. 74(6) , pp. 1232–1233 · doi:10.1016/j.urology.2009.05.009 · PMID:19616284 · W2110018094
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⚙ AI-generated summary by claude@2026-06, 2026-06-22 ⓘ

This case report describes a rare instance of an ectopic decidual reaction in the urinary bladder, which clinically mimicked a vesical tumor.

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Abstract

A urinary bladder tumor in young pregnant women is a very rare finding. It may bring diagnostic problems despite use of advanced imaging techniques. We report on a case of an exceedingly rare occurrence of a decidual reaction in the urinary bladder of a pregnant young woman. To the best of our knowledge, it is the first such case reported in published medical data. The final diagnosis was possible only after histopathologic assessment of a specimen obtained during diagnostic cystoscopy, which showed typical decidual changes within detrusor muscle, without ectopic endometrium, which could suggest more frequent vesical endometriosis.

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MeSH descriptors

Pregnancy Complications Urinary Bladder Diseases Diagnosis, Differential Embryo Implantation Female Humans Pregnancy Pregnancy Complications Urinary Bladder Diseases Urinary Bladder Neoplasms Urinary Bladder Neoplasms Young Adult

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