<prompt> Ghons focus is found in-LeprosyPulmonary tuberculosisSarcoidosisAsbestosis  <response>: Ans. is b i.e., Pulmonary tuberculosis Ghons focuso In primary tuberculosis when inhaled tubercule bacilli implanted in the distal air spaces of the lower part of upper lobe or upper part of the lower lobe, close to the pleura. This area is about 1 to 1.5 cm with caseating necrosis known as Ghons focus.o Ghons focus is one of the component of Ghons complex primary complex, which consists of 3 components: -i Ghons focus subpleural caseating lesionii Caseating hilar lymph nodeiii Draining lymphatics.Note - Due to early bactermia bacillemia seeding of tubercle bacilli may occur at apex to produce Simons focus. 