1临床资料与方法患者,男性,44岁,因“间断性左眼视物模糊4个月”入院。查体:右眼0.9,左眼0.6。眼底检查:未见异常。视野检查:双眼视野颞侧偏盲。头颅CT示:鞍区可见一略高密度结节影,肿瘤包膜见浅弧形钙化(图1A)。头颅MRI增强提示:鞍区可见一等T1等T2圆形异常信号影,可见环状增 1 Clinical data and methods Patients, male, 44 years old, due to “intermittent left eye obscuration 4 months” admission. Physical examination: right eye 0.9, left eye 0.6. Fundus examination: no abnormalities. Visual field examination: binocular temporal hemianopia. Head CT showed: the saddle area can be seen a little high-density nodules, the tumor capsule see shallow arc calcification (Figure 1A). Cranial MRI enhancement tips: saddle area can be seen first-class T2 and other abnormal circular T2 signal, showing ring-like increase