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Primary pulmonary tuberculosis
The primary pulmonary complex includes the parenchymal focus and the regional lymph nodes, about 70% of lung foci, are subpleural, and localized pleurisy is common
  • The hallmark of primary tuberculosis is the lung in the relatively large size of the regional lymph adenitis compared with the relatively small size of the initial lung focus.
     Primary  Post primary
 1 Age  Infant, children  Adult
 2 Cavity  No  Yes
 3 Glandular  Prominent  Not so common
 4 Localization  No localization  Apical localization
 5 Generalized  Present  Localized
 6 Healing  Calcification  Fibrosis
 7 Spread  Blood, lymph vessels  Bronchus

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