This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Cavitation of the lungs is not a feature of: March 2011 
Select and explain. 
A. Lung abscess, B. Primary pulmonary tuberculosis, C. Secondary pulmonary tuberculosis, D. Bronchogenic carcinoma
B: Primary pulmonary tuberculosis
Answer: B: Primary pulmonary tuberculosis 
Explanation: Ans. B: Primary pulmonary tuberculosis Cavitation is rare in primary TB Radiological changes of secondary TB includes ill-defined opacification in one or both of the upper lobes, and as progression occurs, consolidation, collapse and cavitation develop to a varying degree Cavitation in lungs can be seen in C- Carcinoma - Squamous is most common A- Autoimmune - Wegener's granulomatosis, Rheumatoid nodules V- Vascular - Emboli (septic emboli or bland emboli) I- Infection - Lung abscess, Bacterial pneumonia, Fungal pneumonia, Tuberculosis (secondary), Pneumatocele T- Trauma - Pulmonary laceration Y- Young (congenital) - Congenital cystic adenomatoid malformation, Pulmonary sequestration, Bronchogenic cyst