CAJ | 학술논문

目的：探讨肝脏孤立性坏死结节的CT表现特征，以提高诊断准确率。方法对6例肝脏孤立性坏死结节进行常规 CT 平扫及增强扫描，全部病例均经病理证实，观察并记录病灶的大小、形态、边界、密度及增强特点。结果病灶多位于肝表面和肝浅表实质内，呈圆形或类圆形，边界清楚，最小的1．7cm ×2．1cm ，最大的4．9cm ×3．7cm ，CT 平扫4例为低密度影，1例为等密度影，其中 1例内部密度不均匀，可见片状等密度影，增强后5例病灶在动脉期、门静脉期及延迟期呈内部无增强表现，1例病灶内部见多发斑块状与肝实质等密度强化灶，病灶边缘见细环形强化且在延迟期更明显。结论病灶内部三期基本无强化和周边可伴有或不伴有环形强化为肝脏孤立性坏死结节主要 CT 表现，MSCT 是诊断肝脏孤立性坏死结节有价值的检查方法。
목적：탐토간장고립성배사결절적CT표현특정，이제고진단준학솔。방법대6례간장고립성배사결절진행상규 CT 평소급증강소묘，전부병례균경병리증실，관찰병기록병조적대소、형태、변계、밀도급증강특점。결과병조다위우간표면화간천표실질내，정원형혹류원형，변계청초，최소적1．7cm ×2．1cm ，최대적4．9cm ×3．7cm ，CT 평소4례위저밀도영，1례위등밀도영，기중 1례내부밀도불균균，가견편상등밀도영，증강후5례병조재동맥기、문정맥기급연지기정내부무증강표현，1례병조내부견다발반괴상여간실질등밀도강화조，병조변연견세배형강화차재연지기경명현。결론병조내부삼기기본무강화화주변가반유혹불반유배형강화위간장고립성배사결절주요 CT 표현，MSCT 시진단간장고립성배사결절유개치적검사방법。
Objective To explore the CT features of solitary necrotic nodule (SNN) and to raise the accuracy rate of di‐agnosis .Methods Both plain and dynamic enhanced CT scanning were performed in 6 cases proved by pathology .The size ,shape ,margin ,density and enhanced features of each lesion were observed and recorded .Results The SNN mostly lo‐cated in the liver surface and superficial liver parenchyma and the lesions were round or oval .The margin was clearly de‐fined .4 cases of them appeared hypodensity and one of them appeared isodensity on plain CT .The other showed homoge‐neous hypodensity and appeared flaky slightly hyperdensity . No obvious enhancement was found expect that multiple patchy showed delayed enhancement in one case on post‐contrast CT images ,while ,the capsule of these lesions were dem‐onstrated delayed enhancemnet .Conclusion On CT images ,SNN is shown general characteristics that there should be no contrast enhancement within the lesion and/or circular enhancement surrounding lesion .MSCT is a valuable examination to diagnose SNN .