摘要
目的探讨脑内转移瘤瘤周水肿的MRI表现及其相关因素。方法回顾性分析了经手术病理及临床证实的35例脑内转移瘤患者瘤周水肿的MRI表现及其相关困素。结果MRI准确证实脑内转移瘤瘤周水肿程度与肿瘤的部位及大小有关。位于小脑半球及丘脑的瘤周水肿多较轻,而大球半球皮层及皮层下的瘤周水肿相对较重,同时,瘤周水肿的程度与肿瘤的大小成正相关,肿瘤愈大,瘤周水肿愈严重。结论瘤周水肿的发生机制与转移瘤的形成过程和脑的解剖结构特点有关。MRI有助于评价瘤周水肿的进展程度。
Objective To study MRI findings and relative factors of peritumoral edema in cerebral metastasis.Methods MRI findings and relative factors of peritumoral edema in 35 patients with clinically and surgically proven cerebral metastasis were analyzed retrospectively.Results MRI accurately demonstrated that the extent of peritumoral edema was related to location and size of tumor,i.e.peritumoral edema in cerebellar hemisphere and thalamus was lighter than that in cerebral cortex or subcortex,at same time,the greater tumor(>8 cm3)was the severer peritumoral edema.Conclusion Genetic mechanism of peritumoral edema is related to formative course of metastatic tumor and anatomic structure of brain.MR imaging is useful for evaluating the extent of peritumoral edema in cerebral metastasis.
出处
《实用医学影像杂志》
2002年第2期86-87,共2页
Journal of Practical Medical Imaging
