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': 'Sequestrated lobe of the lung is commonly supplied by \nSelect and explain. \nA. Descending aorta, B. Pulmonary artery, C. Intercostal artery, D. Bronchial artery', 'role': 'user'}, {'content': 'Answer: A \nExplanation: BRONCHOPULMONARY SEQUESTRATION\nSequestration is the presence of lobes or segments of lung\xa0tissue which are not connected to the airway system.\xa0The\nblood supply of the sequestered area is not from the\xa0pulmonary arteries but from the aorta or its branches.\nSequestration may be intralobar or extralobar.\n\xa0Intralobar sequestration is the sequestered bronchopulmonary\xa0mass within the pleural covering of the affected\xa0lung.\nExtralobar sequestration is the sequestered mass of lung\xa0tissue lying outside the pleural investing layer such as in the\nbase of the left lung or below the diaphragm. The extralobar\xa0sequestration is predominantly seen in infants and children\nand is often associated with other congenital malformations.', 'role': 'assistant'}]