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What is True about Ghons focus: and explain in detail?
Inhaled tubercule bacilli implanted in the distal air spaces of the lower pa of upper lobe or upper pa of lower lobe ,close to the pleura lead to formarion of ghons focus. Primary complex of tuberculosis consists of 3 components. Pulmonary compound Draining lymphnodes Caseating hilar lymphnode Caseous holar lymphadenopathy is associated with ghon complex and not ghon focus.(ref Robbins 8th/370,9/e p374)