摘要
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 MR manifestations of parotid Warthin′s tumor and to investigate their pathological fundament. MR findings of parotid Warthin′s tumor including shape, margin, signal intensity on T1WI and T2WI, homogeneity of the signal, enhancement were analyzed retrospectively in this study. Methods In total 46 cases(54 lesions) of parotid Warthin′s tumor proved by surgery were enrolled. MRI manifestations were comparatively studied with pathological findings. T1WI and T2WI sequence were used in non contrast scan,while both non contrast and enhanced scan were performed in 50 lesions out of 54. Results The shapes of Warthin′s tumor were regular(51/54); the edges were clear(54/54); more than half of the lesions(33/54) presented with low or equal signal intensity on T2WI; 50 Warthin′s tumors enhanced slightly. The MR features of Warthin′s tumors were different from pleomorphic adenoma and other parotid benign tumors. Conclusion There are certain characteristics of Warthin′s tumors on MR images, and these are helpful in determining the histological nature of the tumor.
出处
《影像诊断与介入放射学》
2004年第2期88-90,共3页
Diagnostic Imaging & Interventional Radiology
