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目的：建立正常小肠血管形态及小肠腺癌血管形态。材料与方法：对１０例正常小肠标本、１６例经病理证实的手术切除标本，其中８例术前已作肠系膜上动脉造影，分别采用血管铸型、血管造影、解剖镜观察及图像分析。结果：正常小肠血管的形态、分布与传统观点不尽相同。血管密度以十二指肠球部最低、在空、回肠呈由低增高，继而降低的变化规律。小肠腺癌术前血管造影确诊率较低（３／８）例，血管造影呈现：供血动脉增粗、杵状中断、狭窄，癌体内造影剂池，癌周血管增多、扭曲，肿块实质血管减少等特征。与正常组比，小肠腺癌血管面密度（目标总面积／统计场总面积）显著性减少（Ｐ＜０．０５）。结论：认识正常小肠血管分布规律，有助于小肠肿瘤的介入诊断和治疗。小肠腺癌癌周血管增多、变形，癌体内血管少、常见造影剂池征。
Objective: To establish normal intestinal vascular morphology and vascular morphology of small intestine adenocarcinoma. Materials and Methods: 10 cases of normal small intestine specimens and 16 cases of pathologically confirmed surgical specimens were removed. Among them, 8 cases had preoperative mesenteric artery angiography. Vascular casting, angiography, anatomical observation and image analysis were used. RESULTS: The morphology and distribution of normal small intestine blood vessels were different from the traditional ones. The vascular density was the lowest in the duodenal bulb, increased from low to high in the ileum, and then decreased. Preoperative angiography of small intestine adenocarcinoma was lower (3/8), and angiography showed thickening of the supplying arteries, discontinuation of the sacrum, and stenosis. Contrast pools in the tumor, increased and distorted perivascular vessels, and parenchymal vascular reduction of the tumor. Features. Compared with the normal group, the vascular areal density (the total target area/the total area of the statistical field) of the small intestine adenocarcinoma was significantly decreased (P<0.05). Conclusion: Recognizing the distribution of blood vessels in the normal small intestine is helpful for the interventional diagnosis and treatment of small intestine tumors. Small intestine adenocarcinomas have increased vascularity and deformation, and there are fewer blood vessels in the body and contrast agent pool signs.