Pulmonary Mycobactetrium kumamotonense with Hepatosplenic Dissemination in an Immunocompetent Patient: A Case Report and Review

Authors

Michael S. Wang, Department of Medicine, Corewell Health South – St. Joseph, MIFollow
Jeremiah Chang, Department of Medicine, Corewell Health South – St. Joseph, MI
Tiffany Whelan, Microbiology, Corewell Health South – St. Joseph, MI
Bo Liu, Department of Medicine, Corewell Health South – St. Joseph, MI
Katie Fitton, Department of Medicine, Corewell Health South – St. Joseph, MI
Jeffrey J Grondin, Department of Medicine, Corewell Health South – St. Joseph, MI

Abstract

We report a 69-year-old with a past medical history of prostate cancer and arsenic poisoning, who was incidentally found to have multiple pulmonary nodules and hepatosplenic lesions on CT imaging. He denied respiratory symptoms, but was noted to have significant weight loss. A bronchoscopy revealed mycobacterium kumamotonense on culture. He was treated presumptively for pulmonary and disseminated infection with azithromycin and ethambutol for 16 months, and 12 months of rifabutin after four months of rifampin which was discontinued due to resistance. Patient’s weight loss resolved and CT imaging appeared significantly improved.

Recommended Citation

Wang, Michael S.; Chang, Jeremiah; Whelan, Tiffany; Liu, Bo; Fitton, Katie; and Grondin, Jeffrey J (2025) "Pulmonary Mycobactetrium kumamotonense with Hepatosplenic Dissemination in an Immunocompetent Patient: A Case Report and Review," Journal of Community Hospital Internal Medicine Perspectives: Vol. 15: Iss. 4, Article 8.
DOI: 10.55729/2000-9666.1503
Available at: https://scholarlycommons.gbmc.org/jchimp/vol15/iss4/8