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A Cold-Blooded Tiptoer: Nonresolving Cellulitis in an Immunocompromised Patient.

Satoshi KitauraKoh OkamotoYoshitaka WakabayashiYuta OkadaAiko OkazakiMahoko IkedaShu OkugawaFumie FujimotoChie BujoShun MinatsukiKensuke TsushimaKinuyo ChikamatsuSatoshi MitaraiKyoji Moriya
Published in: Open forum infectious diseases (2022)
Mycobacterium haemophilum is a nontuberculous mycobacteria (NTM) with a predilection for skin and soft tissue infection (SSTI) in the immunocompromised host. We report a case of disseminated M haemophilum infection initially presenting as a nonresolving subacute cellulitis of bilateral lower extremities. Genetic sequencing was used for final identification, while a commercially available polymerase chain reaction test returned a false-positive result for Mycobacterium intracellulare . Consequently, we highlight the importance of M haemophilum as a major differential diagnosis of SSTI in the immunocompromised host and the need for careful interpretation of rapid diagnostic tests.
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