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
Which of the statements is not true regarding Macleod\'s Syndrome – 
Select and explain. 
A. 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
D: The pulmonary artery on the affected side is hyperplastic
Answer: D: The pulmonary artery on the affected side is hyperplastic 
Explanation: Macleod syndrome 

It is also known as Swyer - Janes syndrome
It is a cause of unilateral hyperlucent lung.
It may present as acute pneumonia, but most patients are discovered when a chest X-ray is obtained for an unrelated reason.
This not a true emphysema.
On examination there is hyperresonance and a small lung with mediastinum shifted towards the more abnormal lung.
There is no vascular abnormality.
No specific treatment is required, it may become less symptomatic with time.