| Summary: | We report a case of a 60-year-old female who presented with intractable ascites 2 months after switching from peritoneal dialysis (PD) to hemodialysis (HD) due to an episode of refractory culture-negative peritonitis (CNP). Abdominal paracentesis yielded inflammatory ascites, which later grew Cladosporium cladosporioides, establishing the diagnosis of fungal peritonitis. She was successfully treated with a 4-week course of oral voriconazole. Cladosporium spp. are common fungi in the environment but rarely cause PD-associated peritonitis and can be challenging to diagnose with conventional microbiologic evaluation. In summary, PD-associated peritonitis can worsen after a patient switches to HD. Therefore, it is essential to maintain a high level of suspicion for such complications related to their previous dialysis modality to arrive at an accurate diagnosis.
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