Abdominal hernias and peritoneal leakage are mechanic complications of peritoneal dialysis. We want to present a nonobes type 2 diabetic female patient treated with continuous ambulatory peritoneal dialysis (CAPD) who had left inguinal hernia due to peritoneal leakage detected by peritoneal scintigraphy. A 38-year-old female patient who has been on CAPD programme for 6 years was suffering from a swelling in her left inguinal region and a little decline in ultrafiltration rate in last two week. Fascial structure was intact by abdominopelvic ultrasound and computed tomography. In peritoneal scintigraphy; increased activity attachments were observed at the left inguinal side after first hour. The patient was transferred to the hemodialysis programme three times a week for 1 month temporarily. After 1 month, peritoneal leakage and fluid accumulation were not observed in the control peritoneal scintigraphy. The patient began to CAPD therapy again. In conclusion, peritoneal scintigraphy should be considered in detection of the dialysate leakage in patients on CAPD that failed to be diagnosed by abdominopelvic USG and computed tomography.