Polypoid endometriosis of the bladder during pregnancy mimicking urachal carcinoma

S Lambrechts, Sandrina Lambrechts, Kristel Van Calsteren, K Van Calsteren, A Capoen, An Capoen, K Op De Beeck, Ken Op de Beeck, S Joniau, Steven Joniau, D Timmerman, Frédéric Amant, F Amant
Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology · 2011 · vol. 38(4) , pp. 475–478 · doi:10.1002/uog.8985 · PMID:21374752 · W2058755331
article OA: closed CC0 ⤵ 20 in-corpus citations
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⚙ AI-generated summary by claude@2026-06, 2026-06-08 ⓘ

This case report details a pregnancy-associated polypoid bladder endometriosis that mimicked urachal carcinoma, highlighting diagnostic challenges due to decidualization.

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Abstract

We report a case of polypoid bladder endometriosis in pregnancy. Diagnostic workup showed a vesicouterine well-vascularized polypoid mass, suspicious for malignancy. During pregnancy, the mass was surgically resected with safe oncological margins. Pathological examination of the resected specimen revealed pseudotumoral polypoid endometriosis of the bladder. We illustrate diagnostic pitfalls in the differentiation between bladder endometriosis during pregnancy and malignancy. As a result of pregnancy-related decidualization of vesical endometriosis, differentiation between this rare occurrence and malignant transformation is challenging.

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Condition tags

endometriosisbladder_endometriosis

MeSH descriptors

Endometriosis Magnetic Resonance Imaging Pregnancy Complications, Neoplastic Ultrasonography, Doppler, Color Urinary Bladder Diseases Urinary Bladder Neoplasms Adult Diagnosis, Differential Endometriosis Endometriosis Female Humans Polyps Polyps Pregnancy Pregnancy Complications, Neoplastic Urinary Bladder Diseases Urinary Bladder Neoplasms

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Papers in the corpus that this work cites (lower rings, blue) and that cite this one (upper rings, green). Dot size scales with the paper's in-corpus citation count — bigger dot = more influential within the endo/adeno field. Click a dot to open that paper. [ expand to 2 hops ] — adds papers reached through this work's immediate citers/citees. Heavier; up to 60 extra dots.

References (12)

Cited by (20)

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