口腔内胃肠粘膜异位是非常罕见的良性病变。１９９４年Ｋｉｎｏｓｈｉｔａ等复习文献记载３０例，加上报告１例，共３１例，平均年龄１０岁（由新生儿～３５岁）；男女比为２１：８（２例缺记载），病变大小０．７×０．９ｃｍ～６Ｘ９ｃｍ；部位在口底１１例，舌前部６例... Oral gastrointestinal mucosal ectopic is a very rare benign disease. In 1994, there were 30 cases reviewed by Kinoshita et al. And 1 case was reported. There were 31 cases with a mean age of 10 years (from newborns to 35 years old). The ratio of male to female was 21: 8 (2 cases were missing). 7 × 0.9cm ~ 6X9cm; part of the mouth in 11 cases, 6 cases of anterior tongue.