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: Surgery
[{'content': 'A most common cause of amoebic lung abscess is - \nSelect and explain. \nA. Direct extension from liver, B. Hematogenous spread, C. Lymphatic spread, D. By inhalation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Amoebic lung abscess is a result of direct spread of infection from liver to lung.\n\tThe infection spreads directly through the diaphragm.\nThe most common area of the lung involved is right lower lobe.\nThe amoebic liver abscess ruptures and then it can involve any of the following structures.\n\n\nRight lung (Most commonly)\nRight pleural cavity\nLeft Lung\nPericardium\nPeritoneal cavity\n\nAlso know\n"Pleuropulmonary involvement is seen in 20-30 % of cases and is the most frequent complication of Amoebic liver abscess"- Harrison', 'role': 'assistant'}]