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目的:分析垂体柄阻断综合征(PSIS)的MRI表现,以提高诊断水平。方法:回顾性分析16例PSIS患者的临床和MRI检查资料。结果:16例患者实验室检查示单或多种垂体激素缺乏,具备相应临床症状。MRI检查显示垂体前叶均变小,15例患者垂体柄未显示,1例垂体柄中断,15例垂体后叶异位,1例后叶高信号未见显示。结论:PSIS表现为部分性或完全性垂体前叶功能减退,MRI特点为垂体体积缩小、垂体柄中断或缺如、垂体后叶异位三联征。
Objective: To analyze the MRI findings of pituitary stalk obstruction syndrome (PSIS) in order to improve the diagnosis. Methods: The clinical and MRI data of 16 patients with PSIS were retrospectively analyzed. Results: 16 patients showed single or multiple laboratory hypogonadal hormone tests, with the corresponding clinical symptoms. MRI examination showed that the anterior pituitary gland became smaller. Pituitary stalk was not found in 15 patients. One pituitary stalk was interrupted, ectopic posterior pituitary in 15 cases and no posterior lobe signal in one case. CONCLUSIONS: PSIS manifests itself as partial or complete anterior pituitary hypofunction, with MRI characterized by reduced pituitary size, interrupted or missing pituitary stalk, and ectopic triad of the posterior pituitary.