摘要:目的探讨MRI在局灶性巨大淋巴结增生症诊断中的应用价值。方法回顾性分析经病理证实的6例局灶性巨大淋巴结增生症患者的MRI表现。结果本组6例巨大淋巴结增生症患者中包括颌颈部病变4例,腹部病变2例,均为透明血管型,形态为圆形或卵圆形,边缘较光滑,MRI平扫表现为等或稍长T1、稍长T2信号影,信号匀匀,未见明显坏死或钙化,动态增强扫描所得时间信号强度曲线表现为速升缓降或平台型,DWI序列呈均匀的弥散受限高信号,其ADC值为(1.02±0.23)×10-3 mm2/s。结论局灶性巨大淋巴结增生症的MRI表现具有特征性,常规MRI结合DWI序列及动态增强扫描有更高的诊断价值。
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