无功能性胰岛细胞瘤临床上少见 ,其发生率占胰岛细胞肿瘤的 15%～ 2 0 % ,其中 4 4 %～ 67%为恶性肿瘤[1] 。因其缺乏典型的症状和体征 ,术前定位、定性诊断困难。本文收集了 1990～ 1999年中 8例影像学资料较为完整的无功能性胰岛细胞瘤病例 ,结合影像学特征 ,对其诊断价值作 Non-functional islet cell tumor is rare clinical, the incidence of islet cell tumors accounted for 15% to 20%, of which 44% to 67% of malignant tumors [1]. Because of its lack of typical symptoms and signs, preoperative positioning, qualitative diagnosis difficult. This article collected from 1990 to 1999, 8 cases of imaging data more complete non-functional islet cell tumor cases, combined with imaging features, its diagnostic value for