Abstract
Roseomonas mucosa is difficult to identify using routine analytical techniques. We herein report a case of peritoneal dialysis (PD)-related peritonitis caused by R. mucosa identified using matrix-assisted laser desorption/ionization-time-of-flight (MALDI-TOF) mass spectrometry (MS). A 70-year-old woman was admitted to our hospital with PD-related peritonitis. Blood agar medium of dialysate culture derived colony pale pink in color, and the organism was identified as R. mucosa using MALDI-TOF MS. She was successfully treated with ciprofloxacin and meropenem without catheter removal. To our knowledge, this is the first case of R. mucosa peritonitis in which technique failure has been avoided.
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