Secondary pulmonary tuberculosis usually involves:March 2012: (A) Base of lungs, (B) Apex of lungs, (C) Middle lobes, (D) Lower lobes
Answer is B. Ans: B i.e. Apex of lungsSecondary pulmonary TB classically involves the apex of the upper lobes of one or both the lungsProgressive primary TB more often resembles an acute bacterial pneumonia, with lower and middle lobe consolidation, hilar adenopathy, and pleural effusion; cavitation is rare.