原发性小肠恶性肿瘤较少见,约占全身恶性肿瘤的0.l%,或占所有胃肠道肿瘤的3%左右.早期诊断尚有困难,而诊断的早晚却直接影响到预后的优劣.为不断提高对原发性小肠恶性肿瘤的诊治水平,现将我们的病例资料报道如下. Primary malignant tumors of the small intestine are rare, accounting for about 0.1% of all malignant tumors of the whole body, or about 3% of all gastrointestinal tumors. Early diagnosis is difficult, and the diagnosis sooner or later has a direct impact on the prognosis. In order to continuously improve the diagnosis and treatment of primary malignant tumors of the small intestine, we now report our case data as follows.