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Cystic mucinous tumors of the urachus: carcinoma in situ or adenoma of unknown malignant potential?
Department of Genetics, Harvard Medical School, Boston, Massachusetts, USA
Jun  2012 (Vol.  19, Issue  3, Pages( 6310 - 6313)
PMID: 22704322


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  • Mucinous cystadenocarcinomas of the urachus are rare. Mucinous benign or premalignant tumors are even rarer, yet pose a challenge in diagnosis and management. We report a case of a 66-year-old man with lower abdominal pain who had a large cystic tumor at the dome of the bladder. En-bloc resection of the tumor with partial cystectomy revealed mucinous cystadenocarcinoma in situ. We reviewed the characteristics of all seven previously reported cases. These tumors are pre-malignant and can cause significant morbidity and mortality. They need to be treated similar to conventional mucinous cystadenocarcinoma by wide surgical resection and partial cystectomy.