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Pulmonary Mycobacterium szulgai infection and treatment in a patient receiving anti-tumor necrosis factor therapy

Abstract

Background A 54-year-old man with a 22-year history of rheumatoid arthritis and an 8-year history of chronic obstructive pulmonary disease presented with dyspnea on exertion, nonproductive cough and fatigue of 1 month's duration. His medication at presentation consisted of etanercept, azathioprine, naproxen and inhaled fluticasone and salbutamol.

Investigations At presentation, the patient underwent physical examination, chest X-ray and high-resolution CT, blood tests, and bronchoalveolar lavage fluid analysis including auramine stains and gene sequence analysis of cultured Mycobacterium szulgai. The patient underwent minithoracotomy after 6 months, and bronchoalveolar lavage fluid analysis, culture and chest X-ray after 18 months. Further chest imaging and culture of sputum samples were performed another year later.

Diagnosis Pulmonary M. szulgai infection.

Management Triple drug therapy with rifampicin, ethambutol hydrochloride and clarithromycin. Anti-tumor necrosis factor treatment was continued.

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Figure 1: The patient's chest X-rays
Figure 2: The patient's CT images
Figure 3: Microbiological and serological parameters during the course of the patient's disease
Figure 4: A photograph of genotyping results of the patient's Mycobacterium szulgai isolates

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Correspondence to Jakko van Ingen.

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The authors declare no competing financial interests.

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van Ingen, J., Boeree, M., Janssen, M. et al. Pulmonary Mycobacterium szulgai infection and treatment in a patient receiving anti-tumor necrosis factor therapy. Nat Rev Rheumatol 3, 414–419 (2007). https://doi.org/10.1038/ncprheum0538

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  • DOI: https://doi.org/10.1038/ncprheum0538

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