CAJ | 학술논문

目的探讨外周性原始神经外胚层肿瘤(pPNETs)的X线、CT及MRI表现.方法回顾性分析14例经病理证实的pPNETs患者的X线平片、螺旋CT及MRI表现,其中12例予X线平片检查,11例予CT检查,5例予MRI检查.结果发生在软组织的pPNETs共8例,X线及CT表现为分界不清的等或低密度软组织肿块,部分肿瘤破坏相邻骨质；MRI表现为软组织内边界不清的较大肿块,其内信号不均匀,相邻骨皮质及部分骨髓腔为软组织影替代；肿块均有不同程度的不均匀强化.发生在骨的pPNETs 6例,X线及CT表现为范围较大的溶骨性骨质破坏,破坏骨的周围伴有大小不等的软组织肿块；病灶在T1WI表现为等或低信号,T2WI为中等或高信号肿块,不均匀中度或明显强化.结论 pPNETs具有一定的影像学特点,X线平片、CT与MRI检查有助于术前了解病变的性质、范围、分期等,具有重要的临床应用价值.
목적 탐토외주성원시신경외배층종류(pPNETs)적X선、CT급MRI표현.방법 회고성분석14례경병리증실적pPNETs환자적X선평편、라선CT급MRI표현,기중12례여X선평편검사,11례여CT검사,5례여MRI검사.결과 발생재연조직적pPNETs공8례,X선급CT표현위분계불청적등혹저밀도연조직종괴,부분종류파배상린골질；MRI표현위연조직내변계불청적교대종괴,기내신호불균균,상린골피질급부분골수강위연조직영체대；종괴균유불동정도적불균균강화.발생재골적pPNETs 6례,X선급CT표현위범위교대적용골성골질파배,파배골적주위반유대소불등적연조직종괴；병조재T1WI표현위등혹저신호,T2WI위중등혹고신호종괴,불균균중도혹명현강화.결론 pPNETs구유일정적영상학특점,X선평편、CT여MRI검사유조우술전료해병변적성질、범위、분기등,구유중요적림상응용개치.
Objective To investigate the X-ray,CT and MRI features of peripheral primitive neuroectodermal tumors (pPNETs).Methods 14 patients were pathologically diagnosed with pPNETs.The imaging of X-ray (twelve image),Computed Tomography(eleven image) and Magnetic Resonance Imaging(five image) were retrospectively analyzed.Results Of 14 patients,there were two sites of tumour:soft tissue( eight patients) and bones( six patients).For tumoura of the soft tissue region,the appearance of X-ray and CT imaging showed equal or lower density soft mass without dear boundary.In some cases,tumours invaded adjacent bones.The appearance of MRI imaging showed large heterogeneous masses inside soft tissue without clear boundary.Tumours displaced adjacent cortical bone and cavitas medullaris.All masses were heterogeneous enhancement on contrast images.For tumours of bone region,X-ray and CT scan showed large scale osteolysis osteoclasia in bone surrounding with soft tissue masses of various size.The lesions were equal or lower signal on T1 WI.All masses were intermediate or hyperintense signal with heterogeneous midrange or obvious enhancement on T2WI.Conclusion Imaging characteristics of pPNETs were described.X-ray,CT and MRI were useful in understanding the property,extent and staging of tumor and very useful in the diagnosis.