Sigmoidovesical fistula expansion with sepsis following transurethral resection of prostate: a case report

Sigmoidovesical fistula (SVF), a rare form of colovesical fistula, predominantly arises from colorectal neoplasms, diverticulitis, or radiation injury. However, no previous literature documents Sigmoidovesical fistula (SVF) expansion with sepsis following transurethral resection of prostate (TURP). We report a 73-year-old male with benign prostatic hyperplasia who developed SVF expansion and postoperative sepsis following TURP. Emergency transverse colostomy achieved infection control, followed by successful laparoscopic sigmoidectomy during secondary surgery. This case highlights the need to remain vigilant for occult SVF risks during TURP procedures. Transverse colostomy should be prioritized as damage control surgery for fistula-related sepsis.