Neisseria cinerea-Mediated Peritonitis in an End-Stage Renal Disease Patient on Continuous Ambulatory Peritoneal Dialysis.

Peritonitis can be a lethal outcome of peritoneal dialysis (PD), often leading to significant morbidity and mortality. It is caused mostly by gram-positive organisms. Neisseria cinerea is a gram-negative nasal and oropharyngeal commensal, rarely reported as an etiology of peritonitis in PD patients. Our patient was a 37-year-old female on continuous ambulatory peritoneal dialysis for the last seven years, who developed peritonitis found to be from Neisseria cinerea. She didn't respond to broad-spectrum antibiotics well and had to be switched to intermittent hemodialysis. We highlight this important microorganism that can lead to significant morbidity and an unfortunate change in dialysis modality.