All of the following produce cavitating nodules in the lung except
C i.e. Hamaoma Hamaoma produces noncavitating popcorn calcificationQ. Various infections, neoplasms, granulomatous lesions (wegner's rheumatoid-caplan's, pneumoconiosis, traumatic & vascular infarcts) produce cavitatory lesions.
Sqamous cell CA
Caplan's syndrome
Hamaoma
Silicosis