Question

primary pulmonary tb involves the: please select your answer... a upper lobes b middle lobe c lower lobes d 2 of the above

Explanation:

Primary pulmonary TB (tuberculosis) typically affects the lower and middle lobes of the lungs. In primary TB, the Ghon complex (a combination of a sub - pleural granuloma in the lung parenchyma and hilar lymphadenopathy) is usually located in the lower or middle lobes. The upper lobes are more commonly affected in reactivation (secondary) TB due to higher oxygen tension which is more favorable for the growth of Mycobacterium tuberculosis in reactivation.

Answer:

C. Lower lobes