2025 Volume 58 Issue 11 Pages 511-516
A 57‒year‒old man receiving peritoneal dialysis for obesity‒related glomerulopathy presented with purulent discharge from the exit site, abdominal pain, cloudy dialysate, and reduced ultrafiltration. He was diagnosed with catheter exit‒site infection involving Staphylococcus aureus, and peritoneal dialysis‒related peritonitis caused by Sphingomonas paucimobilis. His catheter exit‒site infection was resolved by intraperitoneal cefazolin followed by oral cephalexin for eleven days； his peritoneal dialysis‒related peritonitis was also resolved by intraperitoneal ceftazidime and gentamicin administered for three weeks. Microbiological culture from a showerhead swab revealed Sphingomonas paucimobilis. This is one of the environmental microbes considered to cause peritonitis. He was re‒trained in exit‒site care and instructed to clean the showerhead regularly. To date, there have been no signs of relapse or repetition. This is the first published report of culture showing the same Sphingomonas paucimobilis both from dialysate and the environment. We consider that it is important to keep the environment clean, immobilize the catheter, and ensure sufficient water quality in exit‒site care.
