【摘要】 目的 :探讨下丘脑错构瘤的MRI表现 ,以提高对其影像学诊断的认识。方法 :对 4例错构瘤的MRI资料进行分析 ,患者均为男性 ,年龄 2～ 2 0岁 ,平均 9.5岁 ,均行MR平扫和增强扫描 ,并经手术和病理证实。结果 :肿瘤呈结节状或球形等T1 、等T2 或略长T2 信号 ,不均匀。其中 3例表现为肿块与乳头体或灰结节相连 ,1例表现为肿块位于视交叉前下方 ,紧贴乳头体 ,静脉注射Gd DTPA后 ,所有肿块均无增强表现。结论 :MRI能清晰显示肿块与乳头体或灰结节的关系 ,从解剖部位和典型MRI表现上提供了下丘脑错构瘤的诊断信息 ,对手术治疗及预后的判断具有重要的临床价值更多还原

【Abstract】 Objective:To study the MRI features of hypothalamic hamartoma and to improve the understanding of its imaging findings.Methods:The MR findings of hypothalamic hamartoma were analyzed in four men of 2～20 years proved by pathology and surgery.All cases were performed plain and enhanced MR scanning.Results:The mass showed isointensity on T 1WI and inhomogeneous iso or slight hyper intensity on T 2WI,and was not enhanced after Gd DTPA injection.3 cases presented round or nodular mass closely related to the tuber cinereum or the mammillary body,and in 1 case the mass located inferiorly in front of the chiasma opticum and near the tuber cinereum or the mammillary body. Conclusion: MRI can clearly display the anatomical position of hypothalamic hamartoma and provide more diagnostic information,which is of great clinical value in the assessment of curative effect and prognosis.更多还原