Five cases of cystic submucosal tumors in the duodenum were diagnosed by the routine gas-troscopy and edoscopic ultrasonography.

• 方法对5例十二指肠黏膜下囊肿进行常规胃镜及超声内镜检查,并行囊肿穿刺或囊肿套扎电凝切除术。