This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardio thoracic surgery  , Subject name: Surgery
All regarding bronchial cyst are true Except 
Select and explain. 
A. Seen in mediastinum, B. 50-70% of lung, C. Are commonly affected, D. Multilocular
D: Multilocular
Answer: D: Multilocular 
Explanation: Bronchigenic cyst Bronchogenic cysts originate as sequestrations from the ventral foregut, the antecedent of the tracheobronchial tree Cyst wall is composed pathognomic inner layer of ciliated respiratory epithelium MC location : Middle mediastinum (65-90%) Bronchogenic cyst Mediastinal - Sub-carinal, right paratracheal and hilar locations are most common. Does not communicate with the tracheobronchial tree Parenchymal(intrapulmonary) - Typically perihilar with predilection for lower loves. Communicate with the tracheobronchial tree Clinical features Two - thirds are asymptomatic May produce symptoms that depend on their anatomic location Paratracheal region : Airway compression and respiratory distress Lung parenchyma : Become infected, present with fever and cough Ref: Bailey and love 27th edition Pgno :938