THREE CLINICAL CASES OF INTRAPERITONEAL CYSTS CAUSED BY PERITONEAL DIALYSIS

We have experienced three cases of intraperitoneal cysts caused by peritoneal dialysis (PD). These patients have been treated with PD for chronic renal failure. They complained of abdominal distension and a decrease in ultrafiltration. Ultrasonography and CT revealed cysts in all 3 cases, and cystectomy was performed in 2 on them. Histological findings showed that the cyst walls were composed of fibrin-organized fibrous tissues, no malignancy could be confirmed. As the 3 patients had experienced peritonitis, the cause of cyst formation was considered to be the deposition of fibrin by the inflammatory reaction due to peritonitis and chemical stimulation with dialysate.Intraperitoneal cyst is one of complication in PD. When a patient undergoing PD or having PD history complains of abdominal distension or a decrease in ultrafiltration, a possible formation of intraperitoneal cyst should be considered.