Causes of a cavitating lesion in the chest radiograph are all except -: (A) Hamartoma, (B) Pulmonary infarction, (C) Squamous carcinoma of the bronchus, (D) Caplan's syndrome
Answer is A. Haematoma (not hamartoma) causes lung cavitation.
Pulmonary infarct, squamous cell carcinoma of lung, RA & Caplan's syndrome can also cause lung cavitation.