eng Science and Education Publishing American Journal of Medical Case Reports 2374-216X 2023-06-30 11 6 107 109 10.12691/ajmcr-11-6-1 AJMCR20231161 article Brunda MS 1 Shyma Shaji 2 Vandana AM 2 Sivanesh Sekar mssivan1150@gmail.com 2 Internal Medicine, Aster CMI, Bangalore, India Clinical Pharmacology, Aster CMI, Bangalore, India INTRODUCTION: Pulmonary nocardiosis is defined as pneumonia caused by Genus Nocardia (aerobic actinomycetes). Nocardiosis, caused by Gram-positive, weakly acid-fast, ?lamentous aerobic actinomycetes, is an opportunistic infection and remains as a possible cause of pulmonary and systemic infection in immunocompromised patients It is a rare condition in an immune-competent patients. METHODS: A prospective observational study was conducted in Aster CMI Hospital, Bengaluru. We prospectively examined the demographics, treatment related variables (including complications) and outcomes. RESULT: A 70-year-old female patient, experienced with a cough with expectoration, dyspnea, weight loss and recurrent sharp rise in body temperature. The diagnosis of nocardiosis is done by microscopic tests like Broncho alveolar lavage ?uid and revealed ?lamentous Gram-positive bacteria Broncho alveolar lavage fluid aerobic culture showed Nocardia species. The patient was treated with Cotrimoxazole and Imipenem. The patient ameliorate both clinically and radiographically. http://pubs.sciepub.com/ajmcr/11/6/1/ajmcr-11-6-1.pdf pulmonary nocardiosis immunocompetent