髓母细胞瘤的CT诊断(附50例分析)

 目前CT在诊断髓母细胞瘤方面虽有经验，但也经常遇到一些非典型CT表现的特殊病例误诊为其他颅内肿瘤。为进一步提高髓母细胞瘤的CT诊断水平，对经CT检查，并经手术病理证实的50例髓母细胞瘤总结如下。

Expression of vascular endothelial growth factor in transitional cell carcinorma of bladder and its relationship with tumor cell proliferation

Objective To study the expression of vascular endothelial growth factor(VEGF) and Ki|67 in bladder transitional cell carcinorma(TCC) , to evaluate the relationship between VEGF and tumor cell proliferation . Methods With mouse anti|human VEGF and Ki|67 monoclonal antibody , immunohistochemistry was used to examine the expression of VEGF and Ki|67 in 75 cases of TCC and10 cases of normal bladder tissue as contrast. Results VEGF and Ki|67 highly expressed in TCC;VEGF expression and Ki|67 labeling index(Ki|67 LI) in TCC were positively related to the tumor pathological grade clinical stage and lymphoid node metastasis as well.Conclusion VEGF expression and Ki|67 LI reflected the ability of tumor growth and invasion at the basis of angiogenesis and proliferation respectively. Combined examination of VEGF expression and Ki|67 LI has an important significance in evaluating the biological behavior of TCC.