True about miliary tuberculosis: (A) Occurs following primary reactivation, (B) Occurs following secondary reactivation, (C) Both primary and secondary reactivation, (D) All
Answer is D. Military TB is due to hematogenous spread of tubercle bacilli.Although in children,it is often the consequence of primary infection,in adults,it may be due to either recent infection or reactivation of old disseminated foci.The lesions are usually yellowish granulomas 1--2 mm in diameter that resemble millet seeds Reference: Davidson edition23rd pg 589