Near infrared ray-guided partial cystectomy using da Vinci Firefly ® technology and intraoperative cystoscopy for urachal cyst, suspected of urachal tumor

PURPOSE: mode, the near infrared rays transmitted through the bladder wall were visible as green images. MATERIALS AND METHODS: The patient is a 76-year-old woman. She was referred to urology for a tumor at the dome of the bladder. Cystoscopy revealed a round submucosal mass at the dome of the bladder. The possibility of a urachal tumor could not be excluded. Since she was already diagnosed with rectal cancer and scheduled to undergo robot-assisted laparoscopic proctosigmoidectomy, we performed robot-assisted partial cystectomy during the same operative session. RESULTS: mode. There was no residual tumor at the resected margin, and pathological findings revealed that the urachal cyst was benign. CONCLUSIONS: Robot-assisted partial cystectomy for urachal tumors is technically feasible. NIRGS should be considered in selected cases.