Which of the statements is not true regarding Macleod\'s Syndrome –

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.