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Case Reports in Pathology
Volume 2017, Article ID 1942595, 5 pages
Case Report

Urachal Tumor: A Case Report of an Extremely Rare Carcinoma

Department of Pathology, Pathological Anatomy Service, Centro Hospitalar do Porto, Largo Professor Abel Salazar, 4099-003 Porto, Portugal

Correspondence should be addressed to José Palla Garcia; moc.liamtoh@esoj_allap

Received 2 January 2017; Accepted 6 February 2017; Published 22 February 2017

Academic Editor: Ondrej Hes

Copyright © 2017 José Palla Garcia et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The urachus is a tubular structure that connects the bladder to the allantois in the embryonic development, involuting after the third trimester. The urachus carcinoma is an extremely rare tumor that accounts for <1% of all bladder cancers. We report a case of a 46-year-old woman, with no past medical history, complaining of hematuria with 6-month duration and a physical exam and an abdominal computed topographic scan revealing an exophytic mass of 6.8 cm longer axis that grew depending on the anterior bladder wall, invading the anterior abdominal wall. Cystoscopy detected mucosal erosion. The biopsy showed structures of adenocarcinoma of enteric type. The surgical specimen showed urachus adenocarcinoma of enteric type with stage IVA in the Sheldon system and stage III in the Mayo system. This case has a 3-year follow-up without disease recurrence.