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室管膜母细胞瘸是中枢神经系统罕见的恶性肿瘤。现将我院遇到的2例报告如下。 例1张某,男,2岁。头痛伴呕吐半年,走路不稳4个月,视力减退2个月。神经系统检查:双侧视乳头边界不清,左眼底点状出血,双角膜反射减退。右侧指鼻试验、轮替试验阳性,昂白征(+)。CT:小脑蚓部有5×5×4cm圆形混合密度影象,边界不清,突入第四脑室内。手术所见,小脑蚓部膨隆,肿瘤位于第四脑室内,呈紫红色,5×4×3cm边界不清。术后2个月死亡。尸检:顶叶、颞叶、中脑、桥脑蛛网膜下腔广泛瘤细胞播散。镜检:肿瘤均由分化幼稚及一致性的圆形或卵圆形细胞构成。核圆大深染,染色质均匀分布,核分裂易见,胞浆少。细胞紧密呈片状
Ependymal cell lame cells are rare malignant tumors of the central nervous system. Now I met the hospital reported the following two cases. Example 1 Zhang, male, 2 years old. Headache with vomiting for six months, walking unsteady 4 months, vision loss for 2 months. Nervous system examination: unclear bilateral bilateral nipple, left eye punctate bleeding, double corneal reflex. The right side of the nose test, rotation test positive, Ang white sign (+). CT: cerebellar vermis with 5 × 5 × 4cm circular mixed density image, the border is unclear, broke into the fourth ventricle. Surgical findings, cerebellar vermis bulging, the tumor located in the fourth ventricle, was purple, 5 × 4 × 3cm border is unclear. 2 months after the death. Autopsy: the parietal lobe, temporal lobe, midbrain, pons narrow subarachnoid tumor cells widely disseminated. Microscopic examination: Tumors are composed of naive and consistent round or oval cells. Large round deep nuclear staining, chromatin evenly distributed, easy to see nuclear fission, less cytoplasm. Cells are closely flaky