7例肝脏原发性淋巴瘤的MSCT表现

MSCT Features of 7 Cases of Primary Hepatic Lymphoma

目的分析肝脏原发性淋巴瘤(PHL)的多层螺旋CT(MSCT)表现及其病理基础,提高对该病的认识和影像诊断水平。方法回顾性分析经手术或穿刺后病理证实的7例PHL的MSCT表现,所有患者均行MSCT平扫及增强扫描。结果单发病灶5例,多发2例。MSCT平扫表现为肝脏低密度病变,密度均匀,边界清,增强扫描动脉期无或轻度强化,门静脉期呈轻-中度强化,强化方式为进行性延迟强化。结论 PHL好发于肝脏的周边部分或肝门附近,MSCT平扫常表现为均匀低密度肿块,单发或多发,增强扫描后呈进行性轻至中度延迟均匀强化,部分肿块内见正常的肝脏血管穿行,较具特征性。

Objective To analyze the multi-slice computed tomography(MSCT)findings and pathological basis of primary hepatic lymphoma(PHL)for improving the understanding of this disease and the imaging diagnostic level.Methods The MSCT appearances of seven patients with PHL pathologically proved by surgery or puncture were analyzed retrospectively.All included patients who underwent both unenhanced and enhanced MSCT.Results Of the 7 patients,5 patients had single lesions and 2 patients had multiple lesions.The disease appeared as low density liver lesions with homogeneous density and well-defined margin on the unenhanced MSCT.The lesions showed delayed enhancement pattern with no or slight enhancement in arterial phase and slight to moderate enhancement in portal phase.Conclusion The PHL tends to occur in the periphery of liver and porta hepatis.The lesions of the MSCT are usually characterized by a uniform low-density mass,single or multiple lesions which enhance to a progressive slight to moderate delayed uniform enhancement.In some cases,normal hepatic vessels may exist in lesions,which is a feature of PHL.