• Maeghan L Ciampa, James P Chohonis, Richard S Otto, and Benjamin T Franklin.
• Department of General Surgery, Dwight D. Eisenhower Army Medical Center, 300 East Hospital Road, Fort Gordon, GA 30905.
• Mil Med. 2020 Dec 30; 185 (11-12): e2166-e2170.

AbstractWe report on a case of a healthy male patient who was referred to Urology for recurrent persistent urinary tract infections. Investigation revealed a large intraabdominal inflammatory collection abutting the cecum and bladder suspicious for ruptured appendicitis and colovesical fistula. He was taken to the operating room for exploratory laparotomy with General Surgery and Urology and found to have a ruptured appendix secondary to mucinous appendiceal neoplasm with invasion into the cecum and the bladder wall. He then underwent systemic chemotherapy followed by hyperthermic intraperitoneal chemotherapy. He is well with stable right lower quadrant inflammatory collection and without evidence of metastatic disease 22 months following initial surgery. This case presents a rare presentation of a rare disease process that is easy to misdiagnose or be delayed in diagnosis because of its vague and often varied presentation.Published by Oxford University Press on behalf of the Association of Military Surgeons of the United States 2020. This work is written by US Government employees and is in the public domain in the US.

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