Pulmonary actinomycosis a...

A 50 year old non smoker , diabetic male presented with c/o right sided chest pain and sob since 5 days which was sudden in onset, and aggravated on lying down. He did not complaint of cough, fever, blood in sputum, weight loss or anorexia.2decho was normal. CXRAY was s/o right middle lobe consolidation and collapse. CT thorax - encysted right pleural effusion and collapse of right lower lobe.bronchoscopy was done- bal, biopsy taken. Biopsy s/o actinomycotic colonies and negative for malignancy.Silver methenamine stain was positive.