CAJ | 학술논문

目的探讨囊性少突胶质细胞瘤(COD)的MRI表现,提高对本病的认识程度.方法对8例以完全囊性或大囊小结节为形态特征且经手术和病理证实的少突胶质细胞肿瘤(包括2例以少突胶质细胞成分为主的少突-星形细胞瘤)的MRI表现进行回顾性分析,其中7例术前行颅脑MR平扫及增强扫描,1例术前直接行颅脑MR增强扫描.结果 8例COD均为单发病灶,总结其较为特征性的MRI表现有:(1)边界清晰,幕上多见；(2)完全囊性或大囊小结节的形态特征；(3)壁结节多数形态规则,增强扫描均明显强化；(4)囊壁光滑,扩散不受限,增强扫描多数不强化；(5)囊液信号均匀,扩散不受限,液体衰减反转恢复(FLAIR)序列T2WI呈高或低信号,多数呈高信号.结论 COD临床罕见,容易误诊,而其MRI表现尚具备一定的特点,有助于本病的诊断和鉴别诊断.
목적 탐토낭성소돌효질세포류(COD)적MRI표현,제고대본병적인식정도.방법 대8례이완전낭성혹대낭소결절위형태특정차경수술화병리증실적소돌효질세포종류(포괄2례이소돌효질세포성분위주적소돌-성형세포류)적MRI표현진행회고성분석,기중7례술전행로뇌MR평소급증강소묘,1례술전직접행로뇌MR증강소묘.결과 8례COD균위단발병조,총결기교위특정성적MRI표현유:(1)변계청석,막상다견；(2)완전낭성혹대낭소결절적형태특정；(3)벽결절다수형태규칙,증강소묘균명현강화；(4)낭벽광활,확산불수한,증강소묘다수불강화；(5)낭액신호균균,확산불수한,액체쇠감반전회복(FLAIR)서렬T2WI정고혹저신호,다수정고신호.결론 COD림상한견,용역오진,이기MRI표현상구비일정적특점,유조우본병적진단화감별진단.
Objective To investigate the MRI features of cystic oligodendroglioma (COD) and improve the understanding of this uncommon disease.Methods MRI features of 8 cases with oligodendroglial tumors (including 2 cases with oligodendroglial-element dominated oligoastrocytoma) proved by operation and pathology were analyzed retrospectively.All of 8 cases were completely cystic lesions or large cystic lesions with nodules.Before the neurosurgery,7 cases underwent both plain and enhanced MRI scanning and 1 case underwent enhanced MRI scanning.Results Single lesion was detected in each case with COD.The charaeteristic MRI findings could be listed as follows:(1) lesion with sharp border,most supratentorial; (2)completely cyst lesion or large cyst lesion with nodule; (3)markedly enhanced nodule,mostly well defined; (4) smooth cyst wall without diffusion restriction,mostly without enhancement; (5)homogeneous cyst fluid without diffusion restriction,with high or low signal on FLAIR T2WI,mostly hyperintense.Conclusions COD is a rare kind of oligodendroglial tumor and hard to diagnose.However,there are some characteristic MRI findings which will help its diagnosis and differential diagnosis.