This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oesophagus, Subject name: Surgery
Most common site of instrumentation perforation in oesophagus is 
Select and explain. 
A. Cervical, B. Esophago gastric junction, C. Intra-abdominal, D. Lower l/3rd
A: Cervical
Answer: A: Cervical 
Explanation: Ans) a (Cervical) Ref sabiston 18th ed pi 110Endoscopic procedures are the most common cause of iatrogenic esophageal perforation, with the cricopharyngeal area most commonly injured.