Journal
INFECTION AND DRUG RESISTANCE
Volume 16, Issue -, Pages 263-268Publisher
DOVE MEDICAL PRESS LTD
DOI: 10.2147/IDR.S395333
Keywords
Nocardia cyriacigeorgica; subcutaneous abscess; nocardiosis; matrix -assisted laser desorption ionization -time -of -flight; mass spectrometry; MALDI-TOF MS; debridement
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This article retrospectively analyzed the clinical data of a patient with cutaneous nocardiosis caused by Nocardia cyriacigeorgica in Zhejiang Provincial People's Hospital, including clinical manifestations, laboratory examinations, imaging examinations, medication and prognosis. MRI examination showed a 26 mm x 73 mm abscess under the skin. The pus in the abscess was green. Gram staining showed positive branched rod-shaped and undivided hyphae. Small wrinkle dry white colonies were observed after culture, and it was identified as Nocardia cyriacigeorgica by MALDI-TOF MS.
Background: Nocardia cyriacigeorgica, which mainly causes pleuropulmonary and disseminated nocardiosis, has been proved to be one of the most common opportunistic pathogens in patients with immunodeficiency, but the cases that cause subcutaneous abscesses in normal individuals are rare and should be paid attention to.Methods: The clinical data of a patient with cutaneous nocardiosis caused by Nocardia cyriacigeorgica in Zhejiang Provincial People's Hospital were retrospectively analyzed, including clinical manifestations, laboratory examinations, imaging examinations, medication and prognosis.Results: Magnetic resonance imaging (MRI) showed that there was a 26 mm x 73 mm abscess under the skin. The pus in the abscess was green. Gram staining showed positive branched rod-shaped and undivided hyphae. After culture, small wrinkle dry white small colonies were observed, and it was identified as Nocardia cyriacigeorgica by MALDI-TOF MS.Conclusion: We report the first case of a subcutaneous abscess caused by Nocardia cyriacigeorgica in an immunocompetent patient. Compared with cutaneous nocardiosis of which approximately 80% caused by Nocardia brasiliensis invasion, infection of Nocardia cyriacigeorgica is more insidious and latent, the features of the lesions are also unique. For this Nocardia cyriacigeorgica clinical isolate, the tested antibacterial drugs are generally sensitive and have an ideal prognosis after treatment with linezolid and timely debridement.
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