Supplementary Material for: A rare cause of ascites – vesicoabdominal fistula as a late complication of radiation-induced cystitis

Vesico-peritoneal fistula (VPF) is an uncommon type of fistula in the urogenital tract and a rare cause of ascites. Although VPF mainly occurs as an early postoperative complication of gynecological surgery, we report a case of a 71-year-old female patient who presented with ascites, pseudo-renal failure, and peritonitis caused by a vesico-peritoneal fistula as a delayed complication of radiotherapy. In this case report, we discuss treatment strategies based on previously published case studies and our experience. We provide a diagnostic overview of commonly available imaging techniques, such as CT scans and MRIs. Despite their widespread use, these imaging modalities have not led to any shift in the diagnostic process, with the definitive diagnosis being confirmed only by retrograde cystography.