垂体脓肿非常少见 ,作者应用立体定向技术治疗垂体脓肿 2例 ,效果满意 ,报告如下。2例均为男性 ,年龄分别为 36岁、45岁 ,均有视力减退和性功能下降 ,1例有多饮多尿。影像学检查 :X片 2例均显示蝶鞍球形扩大 ,骨质破坏变薄。MRI平扫示鞍内向上发展囊性病变 ,短 T1、长 T2 信号 Pituitary abscess is very rare, the author applied stereotactic technique for the treatment of pituitary abscess in 2 cases, the results are satisfactory, the report is as follows. 2 cases were male, aged 36 years and 45 years old, both have vision loss and sexual function decline, 1 case of polyhydramnios. Imaging examination: 2 cases of X-ray showed expansion of the butterfly sphere, bone destruction thinning. Plain MRI showed saddle up the development of cystic lesions, short T1, long T2 signal