Abdominal esophagocardiectomy with esophagogastric anastomosis, with vagal preservation and construction of a spiral anti reflux valve in the treatment of advanced megaesophagus

腹式食管贲门切除术联合食管胃吻合术，保留迷走神经并构建螺旋式抗反流瓣，用于治疗晚期巨食管