Pseudotumor of the skin due to Mycobacterium genavense
International Journal of Infectious Diseases, ISSN: 1201-9712, Vol: 134, Page: 88-90
2023
- 2Citations
- 5Captures
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Case Description
Mycobacterium genavense is a rare type of nontuberculous Mycobacterium that has been reported to cause disseminated infections in patients who are immunocompromised. Because M. genavense is slow-growing and poorly able to form colonies on Ogawa medium, genetic and molecular analyses are necessary to identify this pathogen. Nontuberculous Mycobacterium infections present with various cutaneous manifestations. Of these, rare cases have been reported to present with mycobacterial pseudotumors. However, there are no reports of M. genavense with cutaneous pseudotumors. In this paper, we report a case of a pseudotumor due to M. genavense infection that was observed only in a cutaneous lesion. The patient was taking 5 mg of prednisolone and was aware of a tumor on the right lower leg. Biopsy samples showed diffuse spindle-shaped histiocytes and various other inflammatory cell infiltrates, and Ziehl-Neelsen staining detected Mycobacterium. Because no colonies formed on the Ogawa medium, genetic testing was performed, and M. genavense was identified by DNA sequence analysis. There were no other disseminated lesions beyond the skin, including in the lungs and liver. Because the patient was immunosuppressed, in accordance with previous literature, a combination therapy of clarithromycin, ethambutol, and rifampicin for 4 months was recommended. When no growth is observed on the Ogawa medium in cases of infection, it is essential to identify the infectious pathogen by genetic analysis.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S1201971223005519; http://dx.doi.org/10.1016/j.ijid.2023.05.004; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85161019696&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/37196757; https://linkinghub.elsevier.com/retrieve/pii/S1201971223005519; https://dx.doi.org/10.1016/j.ijid.2023.05.004
Elsevier BV
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