Peritonitis due to Alistipes finegoldii in a patient on peritoneal dialysisDear Editor Gram-negative peritonitis is becoming one of the greatest problems in peritoneal dialysis patients. Some cases are due to abdominal catastrophe, but other cases are caused by the translocation of bacteria from the gut to peritoneum. The main bacteria in these cases are Escherichia coli, but other bacteria can cause the same issues. Here, we present a case of peritonitis due to a novel organism that resides in the gut and probably caused the peritonitis due to bacterial translocation.