病例一
病例二
病例三
钙化从肿瘤小血管开始，沿肿瘤血管束及其周围肿瘤组织沉积，形成弯曲条带状结构，为少突胶质细胞瘤的特征性CT表现。
Calcificationstartsfromsmalltumorvesselsandisdepositedalongthetumorvascularbundleandsurroundingtumortissues,formingacurvedstripstructure,whichisthecharacteristicCTappearanceofoligodendroglioma.
少突胶质细胞瘤的发病率在脑胶质瘤中占第三位，病变多发生于额叶，可累及深部脑组织。成年人主要发生在大脑半球，而儿童多发生于脑桥和小脑。
少突胶质细胞瘤大多生长缓慢、病程较长，出现症状至就诊的平均时间为2~3年。临床症状多表现为癫发作或头痛，精神症状亦较常见，体征与肿瘤发生的部位有关。约55%的病人有颅内压增高症状，但一般出现较晚。
Oligodendrogliomaoccupiesthethirdplaceintheincidenceofgliomas.Thelesionsmostlyoccurinthefrontallobeandcaninvolvedeepbraintissue.Inadults,itoccursmainlyinthecerebralhemispheres,whileinchildren,itoccursmostlyintheponsandcerebellum.
Mostoligodendrogliomashaveslowgrowthandlongcourseofdisease,andtheaveragetimefromsymptomonsettomedicalconsultationis2~3years.Mostoftheclinicalsymptomsareepilepticseizureorheadache,psychiatricsymptomsarealso