Disseminated Mycobacterium avium complex infection mimicking malignancy in a patient with anti-IFN-γautoantibodies: A case report

Yun Kai Yeh, Jing Ya Ding, Cheng Lung Ku, Wei Chih Chen

研究成果: 雜誌貢獻文章同行評審

4 引文 斯高帕斯(Scopus)

摘要

Background: Disseminated nontuberculous mycobacteria (NTM) infections occur mostly in immunocompromised patients. Therefore, it is difficult to diagnose disseminated NTM infections in patients without history of immunocompromised diseases or using immunosuppressant. Patients with anti-interferon-γ(IFN-γ) autoantibodies are vulnerable to intracellular infections, such as disseminated NTM. Currently, there is no widely used and efficient technique for the detection of anti-IFN-γautoantibodies. Herein, we report a case of an apparently healthy patient with disseminated Mycobacterium avium complex (MAC) infection who tested positive for anti-IFN-γautoantibodies. Case presentation: A 64-year-old non-immunocompromised and apparently healthy Asian male presented to the emergency department with complaints of progressive chest pain for about 6 months and weight loss. A bulging tumour was found in the anterior chest wall. Chest computed tomography showed a lung mass over the right lower lobe and an osteolytic lesion with a soft tissue component at the sternum. Sonography-guided biopsies for the osteolytic lesion and sputum culture confirmed the presence of disseminated MAC infection. In addition, positive test result of anti-IFN-γautoantibodies was noted. The patient was prescribed antibiotics. The lesions over the right lower lobe and sternum attenuated following the antibiotic treatment. Conclusion: Detection of anti-IFN-γautoantibodies is important among previously healthy people with disseminated NTM infection. Presence of anti-IFN-γautoantibodies may suggest a high risk of severe intracellular infection, such as disseminated NTM infection.

原文英語
文章編號909
期刊BMC Infectious Diseases
19
發行號1
DOIs
出版狀態已發佈 - 10月 29 2019

ASJC Scopus subject areas

  • 傳染性疾病

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