All of the following produce cavitating nodules in the lung except: (A) Sqamous cell CA, (B) Caplan's syndrome, (C) Hamaoma, (D) Silicosis
Answer is C. 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.