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 lung is commonly supplied by- \nSelect and explain. \nA. Pulmonary aery, B. Intercostal aery, C. Descending aoa, D. Bronchial aery', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Descending Aoa Pulmonary sequestration o Pulmonary sequestration refers to the presence of a discrete mass of lung tissue without any normal connection to the airway system. o Blood supply to the sequestered area arises not from the pulmonary aeries but from the aoa or its branches. o Sequestration may be of two types ? 1. Extralobar sequestration --> Sequestrations are external to the lung and may be found anywhere in the thorax or mediastinum. Most commonly they are associated with other congenital anamalies. 2. Intralobar sequestration -4 Found within the lung substance and are usually associated with recurrent localized infection or bronchiectasis.", 'role': 'assistant'}]