Results: All 16 cases originated single, 9 were located in stomach, 3 in jejunum, 1 in ileum, 1 in esophagus, 1 in rectum and 1 in posterior peritoneum.

• 结果：16例肿瘤均为单发，位于胃部9例，空肠3例，回肠、食管、直肠及后腹膜各1例。