Pulmonary actinomycosis presenting as a pleural tumour

Pulmonary actinomycosis is a rare gram positive higher prokaryotic bacterial infection. We hereby present a case of 78-year old male presented with non-specific symptoms like cough, shortness of breath (SOB) and chest pain mimicking as pulmonary tuberculosis, fungal infection and lung cancer but was diagnosed to have pulmonary actinomycosis. From this, we want to emphasize that pulmonary actinomycosis should be evaluated in all patients that are not responding to anti-tubercular and lung cancer treatment.