Peritonitis after endoscopic marking in a peritoneal dialysis patient: Could it be chemical?

Peritoneal dialysis patients have higher risk for peritonitis after colonoscopy, due to microperforations of the colonic wall or spontaneous bacterial translocation. The 2016 International Society for Peritoneal Dialysis guidelines suggests antibiotic prophylaxis. Peritoneal spreading of dye during endoscopic tattooing is a complication of colonoscopy reported in the literature. We present a case of culture-negative peritonitis in a peritoneal dialysis patient who underwent an endoscopic tattooing of a colon cancer. Optical microscopy of the peritoneal fluid revealed many