Brevibacterium casei: A Rare Cause of Peritoneal Dialysis-Associated Peritonitis.

Peritonitis is an important complication of peritoneal dialysis (PD), affecting up to 40% of patients at some point of their PD treatment. Here, we describe a case of PD-associated peritonitis due to an unusual pathogen, Brevibacterium casei. The patient was treated with intraperitoneal antibiotics, successfully preserving the PD catheter. To the best of our knowledge, only four cases of peritonitis due to B. casei have been previously documented worldwide, with catheter preservation achieved in just one other case.