An Unusual Cause of a Pulmonary Mass: Actinomycosis.

We present the case of a 62-year-old male with chronic obstructive pulmonary disease and poorly controlled diabetes mellitus who presented with haemoptysis. A radiograph of the chest showed a right lower parahilar opacity which on the contrast enhanced computed tomography was seen to be an irregular, spiculated mass localised to the middle lobe. Considering malignancy as the most probable diagnosis, a bronchoscopic endobronchial biopsy was performed which surprisingly established pulmonary actinomycosis as the diagnosis. The patient was successfully managed with amoxicillin and clavulanic acid and glycaemic control.