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作者报道了5例颅底低分化粘液样软骨肉瘤,男性3例,女性2例,年龄17～46岁。3例有增强前、后的CT片,2例仅有增强后的CT。4例做了MRI(1.5T超导型)矢状T_1加权(500～600/25～30/2)、横断质子密度加权(2000～2272/30/2)和T_2加权(2000～2272/80/2)成象。全部病人都做了经颞骨或后颅凹开颅术及肿瘤部分切除术。标本切片经常规苏木素和伊红染色。细胞特点用于软骨瘤的分类和分级包括基质类型、细胞结构、核型、有丝分裂率和存在的双核、多核或巨细胞。作者见到,5例临床上都有第Ⅵ颅神经麻痹,其中4例有单或双侧锥体综合征。综合CT和MR表现,其中4例肿瘤起源偏离中线结构并伴有岩锥骨质破坏,2例侵犯到桥小脑角引起临床上脑干受
The authors reported 5 cases of poorly differentiated mucoid chondrosarcoma in skull base, 3 males and 2 females, aged 17 to 46 years. Three cases had enhanced CT before and after, and two cases had only enhanced CT. Four cases had MRI (1.5T superconducting) sagittal T_1 weighted (500-600 / 25-30/2), transverse proton density weighted (2000-2272/30/2) and T_2 weighted (2000-2272/80) / 2) Imaging. All patients have done by the temporal bone or posterior fossa craniotomy and tumor resection. Specimens were stained with conventional hematoxylin and eosin. CELL CHARACTERISTICS Classification and grading used for chondroma include the type of matrix, cell structure, karyotype, mitosis, and the presence of binuclear, multinucleated, or giant cells. The author saw that in all 5 cases, there were Ⅵ cranial nerve palsy in clinical practice, and 4 of them had single or bilateral pyramidal syndrome. CT and MR findings, including 4 cases of tumor origin deviates from the midline structure associated with rock cone destruction, 2 cases of violation of the cerebellopontine angle caused by clinical brain stem injury