CAJ | 학술논문

目的：分析胚胎发育不良性神经上皮瘤的MRI影像学特征，以提高对本病MRI征象的认识。方法对2007年1月-2013年12月15例经手术病理证实的胚胎发育不良性神经上皮瘤患者的临床和影像学资料进行回顾性分析。结果15例患者中，男11例，女4例，多数具有癫痫病史；病灶位于颞叶6例，额叶4例，顶叶3例，枕叶2例；和脑白质相比肿瘤T1WI呈低信号，T2WI呈高信号，DWI呈稍低信号，T2WI-FLAIR可见高信号环；增强扫描：病灶实性部分无强化或轻度强化；磁共振波谱（MRS）：符合良性肿瘤波谱特征，表现为NAA峰轻度降低，Cho峰正常。结论胚胎发育不良性神经上皮瘤的MRI表现具有一定的特征性，MRI多方位成像可对肿瘤明确定位，并有助于定性诊断。
목적：분석배태발육불량성신경상피류적MRI영상학특정，이제고대본병MRI정상적인식。방법대2007년1월-2013년12월15례경수술병리증실적배태발육불량성신경상피류환자적림상화영상학자료진행회고성분석。결과15례환자중，남11례，녀4례，다수구유전간병사；병조위우섭협6례，액협4례，정협3례，침협2례；화뇌백질상비종류T1WI정저신호，T2WI정고신호，DWI정초저신호，T2WI-FLAIR가견고신호배；증강소묘：병조실성부분무강화혹경도강화；자공진파보（MRS）：부합량성종류파보특정，표현위NAA봉경도강저，Cho봉정상。결론배태발육불량성신경상피류적MRI표현구유일정적특정성，MRI다방위성상가대종류명학정위，병유조우정성진단。
Objective To analysis MRI appearances of dysembryoplastic neuroepithelial tumors in order to improve the recog-nition of MRI signs of the disease. Methods Clinical data and MRI findings of 15 patients with pathologically proved subependy-momas observed from January 2007 to December 2013,were analyzed retrospectively. Results In 15 patients (11 males and 4 fe-males),Seizures were the main clinical manifestations of most cases. The origin of the primary tumors was in temoral lobe in 6 pa-tients,4 in frontal lobe,3 in parietal lobe and 2 in occipital lobe. They were hypointense relative to normal white matter on T1-weighted and DWI images,hyperintense on T2-weighted and hypertense ring sign on FLAIR. Mild or no enhancement was noted in most cases. MRS showed findings consistent with low-grade tumor,with a normal choline peak and depressed N-acetyl-aspar-tate peak. Conclusion The MRI appearances of dysembryoplastic neuroepithelial tumors possess unique features which are very helpful in diagnosis of subependymomas.