[名词解释] 贲门失弛缓症(achalasia of cardia)

消化性溃疡易发生于() ["A．胃小弯近幽门部","B．胃小弯近贲门部处","C．胃大弯及胃底","D．十二指肠球部","E．十二指肠降部"] 简述肺癌的临床常见病理分型。 支气管腺癌可分为哪几种类型? Barrett食管(Barrett’s esophagus) 食管憩室 贲门失弛缓症(achalasia of cardia)