Singular neurectomy (posterior ampullary nere transsection) and posterior semicircular canal occlusion are the 2 specific techniques used in intractable BPP surgery.

单纯神经切除术（后壶腹神经）和后半塞术是应用于难良阵发位置眩晕的两种特殊的手术术。

We randomly assigned patients to undergo endoscopic trans ampullary drainage of the pancreatic duct or operative pancreaticojejunostomy.

我们随机将病人分配致内镜下经壶腹部胰引流组或外科胰空肠吻合术组。