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目的通过回顾性分析肿瘤形状、边界、T1WI和T2WI信号强度、均匀性、增强效果等形态学征象,总结腮腺Warthin’s瘤的MR表现,并探讨其MR表现的病理基础。方法收集经手术证实的腮腺Warthin’s瘤46例54个瘤灶的MR资料,与病理改变进行对照分析。MR平扫采用T1WI、T2WI扫描,其中50个瘤灶同时行平扫和增强扫描。结果Warthin’s瘤形状规则,边界清楚,超过一半的Warthin’s瘤(33个)T2WI表现为低、等信号,所有经过增强的50个Warthin’s瘤均轻度增强,与多形性腺瘤和其他良性肿瘤表现不同。结论腮腺Warthin’s瘤在MRI表现上有其自身特点,对绝大多数病例进行定性诊断是可能的。
Objective To summarize the MR manifestations of parotid Warthin’s tumor and analyze the pathological basis of MR manifestations by retrospectively analyzing the morphological features such as tumor shape, border, signal intensity, uniformity and enhancement of T1WI and T2WI. Methods MR data of 46 cases of Warthin’s tumor confirmed by surgery were collected and compared with the pathological changes. MR plain scan using T1WI, T2WI scan, of which 50 concurrent tumor scan and enhanced scan. Results Warthin’s tumor had regular shape and clear boundary. More than half of Warthin’s tumors (33) showed low and equal signs of T2WI. All of the 50 enhanced Warthin’s tumors were slightly enhanced, which showed different performance from pleomorphic adenomas and other benign tumors . Conclusion Warthin’s tumor of parotid gland has its own characteristics in MRI manifestations. It is possible to diagnose the majority of cases.