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目的:探讨超声对无功能性胰岛细胞瘤(NIT)的术前诊断价值。方法:7例均经超声检查的NIT患者与病理结果进行对照和分析。结果:超声对NIT良恶性鉴别100％,定位误诊率为57％,定性诊断率为0。声像图分实液型(4例)和囊实型(3例)两种。瘤体最大径线≥9.0cm者6例。病史≤3个月和呈慢性经过而近期内(≤3个月)症状加重者6例。结论:要提高NIT的术前超声诊断率,必须把握:①了解瘤体大小与病史间不相平行的临床特点;②了解肿瘤的起源特点,明确肿瘤位置与胰腺的关系。
Objective: To investigate the value of ultrasound in the diagnosis of non-functional islet cell tumor (NIT). Methods: Seven patients with NIT who underwent ultrasonography were compared with pathological findings. Results: The diagnosis of benign and malignant NIT by ultrasound was 100%, the misdiagnosis rate was 57% and the diagnostic rate was 0. Ultrasound liquid (4 cases) and cystic solid (3 cases) two. The largest diameter of the tumor ≥ 9.0 cm in 6 cases. Six patients with history of ≤3 months and chronic exacerbation of symptoms in the near future (≤3 months). Conclusion: To improve the rate of preoperative ultrasound diagnosis of NIT, we must grasp: ① understanding of tumor size and clinical history of non-parallel clinical features; ② understand the origin of the tumor characteristics, clear tumor location and the relationship between the pancreas.