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垂体细胞瘤MRI误诊分析二例
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- Author:
- No author available
- Journal Title:
- Chinese Journal of Radiology
- Issue:
- 11
- DOI:
- 10.3760/cma.j.issn.1005-1201.2015.11.016
- Key Word:
- No keyword available
Abstract： 例1 女,61岁,因频发头痛、恶心、呕吐半个月于2011年11月29日入院.MRI平扫:蝶鞍略扩大,鞍底略下陷,鞍内偏右后侧见欠规则形短T1、等T2病变,边界尚清(图1,2),大小为0.9 cm×0.8 cm×0.9 cm,病变与垂体前叶分界略欠清,部分包绕颈内动脉海绵窦段,未见明确垂体后叶显示.MRI增强:病变呈高信号,与垂体分界清晰,垂体柄呈均匀强化,视交叉未见明确异常(图3),影像诊断:考虑微腺瘤伴出血可能性大.手术及病理:采用经鼻蝶入路肿瘤切除术.病理诊断:垂体细胞瘤(WHO Ⅰ级).免疫组织化学结果显示:胶质纤维酸性蛋白(GFAP)、波形蛋白(vinmentin)、酸性钙结合蛋白(S-100)(+).术后病理:肿瘤组织呈淡褐及淡黄色,并可见部分黏液,细胞核呈椭圆形,层状及交织状排列.
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