Which of the following doesn't cause cavitation in lung parenchyma?: (A) Squamous cell Ca, (B) TB, (C) Hamaoma, (D) Staphylococcus pneumonia
Answer is C. There is an extensive list of diseases that causes cavitation, be familiar with the common ones. Neoplastic Bronchogenic carcinomas Metastases Lymphomas Immunologic Wegener granulomatosis Rheumatoid nodule Infections Bacteria: Staph. aureus, gram-negative bacteria, pneumococcus, mycobacteria, melioidosis, anaerobes, actinomycosis, nocardiosis Fungi: Histoplasmosis, coccidioidomycosis, Blastomycosis, aspergillosis, mucormycosis, cryptococcosis, P carinii, sporotrichosis Parasites: Hydatid disease Others Thromboembolism or septic embolism Progressive massive fibrosis (pneumoconiosis) Bronchiectasis (localized) Congenital lesions