
Keywords: بیماری مزمن انسدادی ریه; Pulmonary nocardiosis; Opportunistic infections; Chronic obstructive pulmonary disease; TuberculosisChronic Obstructive Pulmonary Disease, COPD; Human Immunodeficiency Virus, HIV; High Resolution Computed Tomography, HRCT; Pulmonary Nocardiosis, PN; Tuber