<prompt> True regarding presentation of primary T.B. isBL pleural effusion with negative Tuberculin testUL hilar lymphadenopathySustained chronic pyrexiaBL pleural effusion with positive tuberculin test  <response>: Answer is B Unilateral hilar lymphadenopathy: Unilateral hilar lymphadenopathy as pa of the primary complex is a characteristic feature of primary tuberculosis Primary tuberculosis: It is the first infection with tubercle bacilli in individuals who have not been previously exposed to the organisms Seen in children Q Primary complex is characteristic Primary Ghon complex Unilateral enlarged hilar lymph nodes 1 Ghon focus Q:Epitheloid-cell granulomatous inflammation consolidation at site of parenchymal infection. Usually small and subpleural most commonly located under pleura in lower pa of upper lobe Usually a symptomatic Q or manifested by a mild flu like illness at time of tuberculin conversion 