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胰腺内分泌肿瘤罕见,有分泌性肿瘤和无分泌功能性肿瘤两种。分泌性肿瘤有胰岛细胞瘤、胃泌素瘤、胰高血糖素瘤、肠血管活性肽瘤、生长抑素瘤等,均以高分泌综合征和肿瘤征象为特点。由于肿瘤具有丰富的血管,组织学上难以分辨良恶性,有时只有通过随访才能确定。作者根据8例胰腺内分泌肿瘤的MRI表现,结合CT、手术和随访结果分析比较。年龄40～63岁,男5例,女3例,采用MAX GE 0.5T MRI系统,不口服造影剂,距阵192×256,自旋回波T_1、T_2加权序列成象。胰腺肿瘤与正常胰腺组织比较,分为低信号,等信号,中等信号和高信号。结果发现:①原发肿瘤5
Pancreatic endocrine tumors are rare, with secretory tumors and nonsecreting functional tumors. Secretory tumors include islet cell tumors, gastrinoma, glucagonoma, intestinal vasoactive peptide tumors, and somatostatin tumors, all of which are characterized by high secretory syndrome and tumor signs. Because tumors are rich in blood vessels, it is difficult to distinguish between benign and malignant histology, and sometimes only through follow-up can be determined. The authors compared the MRI findings of 8 cases of pancreatic endocrine tumors with CT, surgery, and follow-up results. Between the ages of 40 and 63 years old, 5 males and 3 females, using the MAX GE 0.5T MRI system, no oral contrast agent, 192 × 256 from the array, spin echo T_1, T_2 weighted sequence imaging. Pancreatic tumors are classified as low signal, equal signal, medium signal and high signal compared with normal pancreatic tissue. Findings: 1 primary tumor 5