This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': "True about Ghon's focus - \nSelect and explain. \nA. Left apical parenchymal lesion, B. Right apical parenchymal lesion, C. Sub pleural caseous lesion in right upper lobe, D. Subpleural caseous lesion just above or below interlobar fissure", 'role': 'user'}, {'content': "Answer: D \nExplanation: 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 Ghon's focus.\nPrimary complex or Ghon's complex of tuberculosis consists of 3 components.\n\n\nPulmonary compound or Ghon's focus.\nDraining lymphatics\nCaseating hilar lymph node", 'role': 'assistant'}]