CAJ | 학술논문

目的：分析肝脏原发性神经内分泌癌(PHNEC)的影像学表现,旨在提高对该肿瘤的认识。方法回顾性分析经病理证实的5例 PHNEC 的影像学资料。术前4例行 CT 平扫及增强扫描,1例行 MRI 平扫及增强扫描。结果4例行 CT 检查,单发2例,多发2例,肿瘤最大径5.5~10 cm。平扫表现为肝内低密度占位,病灶中央可见不规则更低密度区,边界尚清楚,动态增强后动脉期病灶实质部分明显不均匀强化,门脉期及延迟期仍有强化,强化的范围较动脉期增大,中央低密度区不强化。1例行 MRI 检查,为单发病灶,最大径5.0 cm,位于肝右后叶,T1 WI 为低信号,T2 WI、DWI 均为高信号,周边可见小圆形囊性信号,强化方式呈持续性轻~中度强化。肿块周围肝内血管受压移位,但无癌栓形成,腹腔及后腹膜均未见明显肿大淋巴结。结论CT 和 MRI 能基本反映 PHNEC 的特征,在该病的诊断与鉴别诊断中有一定价值。
목적：분석간장원발성신경내분비암(PHNEC)적영상학표현,지재제고대해종류적인식。방법회고성분석경병리증실적5례 PHNEC 적영상학자료。술전4례행 CT 평소급증강소묘,1례행 MRI 평소급증강소묘。결과4례행 CT 검사,단발2례,다발2례,종류최대경5.5~10 cm。평소표현위간내저밀도점위,병조중앙가견불규칙경저밀도구,변계상청초,동태증강후동맥기병조실질부분명현불균균강화,문맥기급연지기잉유강화,강화적범위교동맥기증대,중앙저밀도구불강화。1례행 MRI 검사,위단발병조,최대경5.0 cm,위우간우후협,T1 WI 위저신호,T2 WI、DWI 균위고신호,주변가견소원형낭성신호,강화방식정지속성경~중도강화。종괴주위간내혈관수압이위,단무암전형성,복강급후복막균미견명현종대림파결。결론CT 화 MRI 능기본반영 PHNEC 적특정,재해병적진단여감별진단중유일정개치。
Objective To investigate the imaging features of primary hepatic neuroendocrine carcinoma.Methods The imaging features of primary hepatic neuroendocrine carcinoma confirmed by pathology in 5 patients were reviewed retrospectively.Among the patients,plain and contrast enhanced CT in 4 and plain and contrast enhanced MRI in 1 were performed.Results CT showed a single lesion in 2 patients and multiple lesions in other 2 with the maximum diameter of 5.5 cm-10 cm.On plain CT,all lesions were hy-podensity with clear boundary and lower area in the center.The enhanced CT showed the lesions with obvious enhancement in arteri-al phase and gradually increasing enhanced area in portal vein and delayed phases but without enhancement in the lesion center.MRI showed the only one lesion in 1 patient with heterogenerous hypointensity on T1 WI,hyperintersity on T2 WI and DWI,and with mild to moderate delayed enhancement.The maximum diameter of the lesion was 5.0 cm,accompanied by a small round cystic structure at the periphery.The compression and displacement of peripheral blood vessels by the lesion without thrombus,and no lymphade-nopathy were also identified.Conclusion CT and MRI may show the imaging characteristics of the primary hepatic neuroendocrine carcinoma,which is helpful for the diagnosis of the tumor.