Empyema necessitans mimicking mesothelioma; unusual presentation of active pulmonary TB in immuno-competent state

•This case presented with very rare feature of active Pulmonary TB.•It denotes that Empyema Necessitans can mimick mesothelioma.•Unusual CT findings of Empyema Necessitans.•It states importance of induced sputum for TB diagnosis.•We recommend to test induced sputum for extrapulmonary tuberculosis to halt the spread of TB in the communities.