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
T-staging of esophagus is best done by - 
Select and explain. 
A. EUS, B. CT, C. MRI, D. PET
A: EUS
Answer: A: EUS 
Explanation: Ans. (a) EUSRef Sabiston 20th Edition, Page 1027-1035* IOC for diagnosis: Endoscopic biopsy* IOC for T Staging: EUS* IOC for N staging: EUS* IOC to assess Metastasis: CECT chest and abdomen