Petrovic, J. (57207943674)J. (57207943674)PetrovicBarisic, G. (55996920300)G. (55996920300)BarisicKrivdokapic, Z. (55503352000)Z. (55503352000)KrivdokapicKrivokapic, B. (55750765600)B. (55750765600)Krivokapic2025-06-122025-06-122012https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874030215&partnerID=40&md5=8ef6e7ab867e1c0720a55cb3413b6462https://remedy.med.bg.ac.rs/handle/123456789/9825Primary adenocarcinoma of the urinary bladder is a rare neoplasm. It accounts for 1-2% of all bladder carcinomas and sometimes may be found in the bladder diverticula. Fistula between duodenum and renal pelvis is another rarity while colovesical fistula is not so uncommon. We present a case of a 40 years old man who had surgery for colovesical and duodenorenal fistula and subsequently developed adenocarcinoma of the urinary bladder.AdenocarcinomaDuodeno-pyelic fistulaSigmoido-urethral fistulaUrinary bladder