目的 探讨常规MRI联合最小ADC 值对腮腺淋巴结病变诊断及鉴别诊断的 价值。方法 回顾性分析经病理组织学证 实的腮腺淋巴结病变21例(103个病灶) 及非淋巴结病变14例(多发，共57个病 灶)的MRI特点，同时测量并比较最小ADC 值。结果 腮腺淋巴结病变组信号均匀一 致发生率(100﹪)明显高于非淋巴结病变 组(21﹪，P＜0.05)；淋巴结病变组伴颈 部多发淋巴结增大发生率(100﹪)明显高 于非淋巴结病变组(14﹪，P＜0.05)。淋 巴结病变组最小ADC值低于非淋巴结病变 组，分别为(0.62±0.12)×10-3mm2 /s、 (1.07±0.15)×10-3mm2 /s，两者间差异有 统计学意义(P＜0.05)。结论 常规MRI联 合最小ADC值有助于腮腺淋巴结病变的诊 断及鉴别诊断。

Objective To explore the value of conventional MR combined with ADCmin in diagnosis and differential diagnosis of parotid lymphocystis disease. Methode The MRI characteristics of 21 patients (103 lesion) of parotid lymphadenopathy and 14 patients (multiple, 57 lesion) of non-lymphadenopathy with pathologically confirmed were analyzed retrospectively. In addition , the minimum ADC value of lesions were measured and compared. Results Incidence of homogeneous signal in parotid lymphadenopathy group(100%) were obviously higher than in non-lymphadenopathy group (21%, P ＜0.05). Incidence of cervical and submandibular lymph nodes enlargement in parotid lymphadenopathy group(100%) were obviously higher than in non-lymphadenopathy group(14%,P＜0.05). The minimum ADC Value of lymphadenopathy was lower than non-lymphadenopathy, respectively (0.62±0.12)×10-3mm2 /s, (1.07±0.15)×10-3mm2 / s, the difference was statistically significant(P＜0.05). Conclusion Conventional MR combined with minimum ADC value avail the diagnosis and differential diagnosis of parotid lymphocystis disease.