患者男,67岁。1年前无明显诱因出现乏力、食欲减退、怕冷,无恶心、发热及盗汗。体检:全身皮肤黏膜无黄染及色素沉着,腋毛脱落。MRI检查:平扫见垂体上缘弧形上突,T1WI上呈较均匀等信号(图1);T2WI上呈高信号,信号强度明显高于脑脊液(图2),边缘清晰、光滑。垂体柄抬高、左偏。视交 Patient male, 67 years old. 1 year ago no obvious incentive to appear fatigue, loss of appetite, cold, no nausea, fever and night sweats. Physical examination: systemic skin and mucous membrane without yellow dye and pigmentation, armpit hair off. MRI examination: flat swept the upper edge of the pituitary gland on the sudden, T1WI showed a more uniform signal (Figure 1); T2WI was high signal intensity was significantly higher than cerebrospinal fluid (Figure 2), the edge clear and smooth. Pituitary stalk elevation, left deviation. Depending on the delivery