头颈部软组织血管瘤病理及MR征象分析

MR manifestations with pathologic correlation of soft-tissue hemangiomas in head and neck

目的:探讨头颈部软组织血管瘤MR征象特点。材料与方法:回顾性分析6例经手术病理证实的头颈部软组织血管瘤MRI表现,并与病理对照分析。结果:形态学上,头颈部血管瘤可见指样突起。信号改变上,所有病例于T1WI、T2WI均为混杂信号,T1WI以等或稍高信号为主,内混有脂肪样高信号及斑点状、线条状低信号;T2WI及T2WI?SPIR以明亮高信号为主;增强扫描为明显不均匀强化,呈斑点状、条状或蚓状。结论:MR信号特点可反映软组织血管瘤的复杂病理组成成分,头颈部软组织血管瘤的形态有一定特征,认识这些征象有助于正确诊断血管瘤,并对其累及范围作出正确判断,为临床手术方案的制定提供依据。

Objective:To study the characteristic MR signal of soft-tissue hemangiomas in head and neck.Materials and Methods :We analyzed the MR manifestations of six cases of histopathologically-proved hemangiomas in head and neck retro-spectively.Results:Morphologically,hemangiomas showed finger-liked processes.As to signal characteristics,all cases showed mixed-signal intensity on T 1 WI and T 2 WI.On T 1 WI,they showed mainly moderate or slightly high-signal intensity,with in the mass there may be high-signal intensity similar to fat and spot-like or linear-like low-signal intensity.On T 2 WI and T 2 WI?SPIR sequences,they showed brightly high-signal intensity.On enhancement scan,they showed markedly spot-like,linear-like or earthworm-like inhomogeneous enhancement.Conclusion:MR findings can reflect the complex pathological components of soft-tissue hemangiomas.The morphology of hemangioma in head and neck is characteristic.Knowing these signs is helpful to diagnose the hemangioma and its involving areas correctly and provides evidence for clinical operation planning.