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: Pediatrics
[{'content': "Which of the statements is not true regarding Macleod\\'s Syndrome – \nSelect and explain. \nA. It is not a true emphysema, B. Occurs before 8 years of age, C. It is unilateral emphysema, D. The pulmonary artery on the affected side is hyperplastic", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Macleod syndrome \n\nIt is also known as Swyer - Janes syndrome\nIt is a cause of unilateral hyperlucent lung.\nIt may present as acute pneumonia, but most patients are discovered when a chest X-ray is obtained for an unrelated reason.\nThis not a true emphysema.\nOn examination there is hyperresonance and a small lung with mediastinum shifted towards the more abnormal lung.\nThere is no vascular abnormality.\nNo specific treatment is required, it may become less symptomatic with time.', 'role': 'assistant'}]