目的 探讨卵巢透明细胞癌(OCCC)的影像学表现和病理特点,以提高对该病的诊断水平.方法 回顾性分析经病理学证实的11例OCCC的MRI、CT影像资料和临床资料,8例患者行MRI平扫及增强检查;3例患者行CT平扫及增强检查,对病灶内部结构、信号特征及增强表现进行分析.结果 1例患者为双侧发病,10例为单侧发病,共12个病灶.病灶最大径40～115 mm,平均79.5 mm;1个病灶呈实性,11个病灶呈囊实性(其中6个病灶呈单房囊性为主的囊实性肿块,可见沿囊壁突向囊内的多发、不规则壁结节;5个病灶呈以实性为主的囊实性肿块);2个病灶边缘不整,10个病灶形态规整,呈椭圆形或圆形,包膜完整;12个病灶实性成份DWI均呈明显高信号,增强扫描后呈不均匀明显强化.结论 OCCC患者的影像学检查有一定特征性,但缺乏明显的特异性,结合临床病史和实验室检查资料,可以提高术前诊断准确性.

Objective To study the clinical manifestations and magnetic resonance imaging(MRI) features of superficial sid-erosis of central nervous system (SSCNS) in children so as to improve the level for the diagnostic s of this disorder. Methods A retrospective analysis of 5 pediatric SSCNS patients, who were confirmed by clinical and MRI imaging examination in Ningbo woman & children's hospital from February 2014 to October 2016, was conducted in this work. All those 5 patients underwent routine MRI scanning, T2?-weighted gradient echo sequence (GRE-T2?WI), and susceptibility weighted imaging (SWI) se-quence scanning. Then, the clinical manifestations and MRI signal characteristics were analyzed. Results In those five chil-dren,two children presented with unilateral hearing loss,one with Barbinski positive sign,3 with headache or dizziness history, one with unilateral vision loss,and one with a history of epilepsy. The MRI images of T2WI,GRE-T2?WI and SWI exhibited the low signal shadow in the left frontal cortex of temporal lobe cortex,right inferior surface covering the surface of the frontal cortex surface,right temporal lobe and local cortical surface of left parietal lobe cortex surface and the right lateral fissure,respectively. The lesions showed slightly low signal in the sequence of T1WI,with no obvious manifestation. Conclusion The clinical mani-festations of SSCNS in children are different from those in adults. MRI is the preferred method for the examination of SSCNS in children. GRE-T2?WI sequence is more intuitive and has the highest sensitivity in showing SSCNS in children.