贲门是X线检查的重点和难点之一,是胃癌的好发部位,由于位置较高(在肋弓内),不易扪诊,且解剖生理较为复杂,正常变异较多。此外,黏膜皱襞较特殊,X线征象较复杂,故对此部位早期癌的诊断较为困难。1胃底贲门和食管下端的正常X线表现1.1食管下端黏膜的正常X线表现:食管下段通过膈裂 Cardia is one of the key and difficult point of X-ray examination. It is a predilection site for gastric cancer. Because of the high position (within the rib arch), it is not easy to palpate, and the anatomy and physiology are more complex with more normal variation. In addition, mucosal folds more special, X-ray signs more complicated, so early diagnosis of this part of the cancer is more difficult. 1 gastric cardia and esophageal lower end of the normal X-ray 1.1 normal esophageal mucosa of the normal X-ray findings: the lower esophagus through the diaphragm