This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
Most common site of oesophageal rupture in rigid bronchoscopy 
Select and explain. 
A. Cervical region, B. Cardiac region, C. Mid esophagus, D. GE junction
A: Cervical region
Answer: A: Cervical region 
Explanation: Rigid bronchoscopy--It is used for removal of the foreign body and bronchial wash. It reaches up to third generation bronchioles. It is used to take the biopsy from carcinoma of proximal divisions but not from carcinoma of the peripheral lung. The rigid scope has got multiple holes to allow ventilation during the procedure (Oesophagoscope does not have side holes). It is done under general anaesthesia. Ref: SRB&;s manual of surgery,3 rd ed, pg no 1079