Abstract
Peritonitis is a common clinical problem in patients treated by peritoneal dialysis. Corynebacterium species
are an uncommon cause of continuous ambulatory peritoneal dialysis (CAPD) related peritonitis, and
Corynebacterium amycolatum (C. amycolatum) is rarely described in the literature. In the present case, we
report relapsing peritonitis caused by in a 55-year-old Turkish woman with normal immune
function undergoing CAPD. The pathological diagnosis was nephrotic syndrome. The patient was treated with
intraperitoneal (IP) vancomycin. No bacterial growth was detected in conventional culture media, however,
bacteria were isolated from the peritoneal fluid culture on second day by BACTEC (Becton Dickinson, USA)
automated blood culture system. The organism was identified as C. amycolatum by Gram stain, colony
morphology and numerous biochemical tests including API CORYNE kit (bioMerieux, France). To our
knowledge, this is the first report of relapsing peritonitis caused by C. amycolatum in a patient undergoing
CAPD. This bacterium should be kept in mind as a possible agent in CAPD patients with peritonitis.