Bacillus cereus necrotizing pneumonia in a patient with nephrotic syndrome.

Bacillus cereus (B. cereus) is a Gram-positive rod that is widely distributed in the environment and can be a cause of food poisoning. We herein present a case of B. cereus necrotizing pneumonia in a patient with nephrotic syndrome under corticosteroid treatment after developing transient gastroenteritis symptoms. B. cereus was isolated from bronchial lavage fluid and transbronchial biopsy specimens. A multiplex polymerase chain reaction analysis of the toxin genes revealed a strain possessing enterotoxicity. The patient recovered after one week of intravenous meropenem followed by a combination of oral moxifloxacin and clindamycin. B. cereus is a pathogen that causes necrotizing pneumonia in immunocompromised hosts.