Sphincterotomy of sphincter of Oddi is performed at: (A) 3 O'clock position, (B) 6 O'clock position, (C) 9 O'clock position, (D) 11 O'clock position
Answer is D. This cut is made superiorly (at the 11 o'clock position) for 4 to 5 mm The sphincter is incised at the 11-O'clock position to avoid injury to the pancreatic duct