编者按：小肠肿瘤较少见，术前诊断有一定困难，本例以上消化道反复出血为主要临床表现，两次手术探查均未发现出血部位，直至腹部出现包块，手术后才明确病变部位及性质。从本例应吸取教训：1、急性上消化道大出血尽可能在术前明确出血部位，如情况不允许，则手术探查时未发现 Editor’s note: Intestinal neoplasms are rare, preoperative diagnosis is difficult. In this case, repeated bleeding of the digestive tract was the main clinical manifestation. No bleeding site was found after two surgical explorations until the abdomen appeared masses. The lesions were clearly identified after surgery. And nature. Lessons should be learned from this example: 1. Acute bleeding in the upper gastrointestinal tract should be made as clearly as possible before the operation. If the situation is not allowed, the surgical exploration will not be found.