小肠肿瘤少见,不到全部胃肠道肿瘤的25%,占全部恶性肿瘤的2%以下。这些肿瘤通常仅有一些非特异性的表现,如腹痛、胃肠道出血、恶心、呕吐和体质量减轻,故容易忽视。目前,小肠灌肠仍用于可疑小肠肿瘤的检查,且具有较高的敏感性,小肠肿瘤的位置及CT表现有助于诊断。然而,随着CT技 Small intestinal tumors are rare, less than 25% of all gastrointestinal tumors, accounting for less than 2% of all malignant tumors. These tumors usually only have some non-specific performance, such as abdominal pain, gastrointestinal bleeding, nausea, vomiting and weight loss, it is easy to ignore. Currently, small intestine enema is still used for the examination of suspicious small bowel tumors, and has a high sensitivity, small bowel tumor location and CT findings contribute to the diagnosis. However, with CT technology