目的 回顾性总结46例垂体瘤的 临床特征及影像特点。方法 收集我院 2013年2月至2016年2月期间收治的46例垂 体瘤患者作为研究对象展开回顾性分析， 总结垂体瘤在发病年龄、性别、临床表 现、肿瘤类型、大小与形态等方面的特 点。并对垂体瘤的CT及MRI影像表现进行 分析，总结微腺瘤及大腺瘤的CT平扫、 增强扫描及MRI平扫与增强扫描特点。结 果 垂体瘤患者以女性居多，且女性患者 发病年龄明显小于男性患者。临床表现以 头晕、呕吐、视力模糊或下降、溢乳、闭 经、月经紊乱等为主，微腺瘤多无症状。 垂体瘤各类型中以催乳素瘤、混合瘤、 ACTH腺瘤较为常见。微腺瘤平扫检出难度 大，多呈等密度或低密度病灶，增强早期 垂体腺中呈局限性低密度区，边界清晰； 大腺瘤CT平扫可见鞍上池肿物，包膜完 整、边界清晰，呈均匀等密度或稍高密度 区。微腺瘤与大腺瘤的平扫TIWI呈等或略 低信号，T2WI呈高或等信号；增强扫描呈 局限性低密度区，边界清晰。结论 垂体 瘤具有一定临床特点，多发于女性育龄 期，以大腺瘤较多见，患者多可见头晕、 呕吐、视力模糊或下降、溢乳、闭经、月 经紊乱等症状。垂体瘤的CT及MRI影像学 表现有一定特征，对坏死、囊变、出血的 显示良好，作为垂体瘤临床检查手段具有 较大可行性。

Objective To retrospectively summarize the clinical features and imaging characteristics of 46 cases with pituitary adenomas. Methods Forty-six cases with pituitary adenomas treated in our hospital between February 2013 and February 2016 were retrospectively analyzed. The age of onset, gender, clinical manifestations, type, size and shape of pituitary adenomas were summarized. The CT and MRI imaging manifestations of pituitary adenomas were analyzed, and the characteristics of CT plain scan, enhanced scan, MRI scan and enhanced scan were summarized. Results Most of the patients with pituitary adenoma were female, and the age of onset was significantly smaller than that of the male patients. The main clinical manifestations included dizziness, vomiting, blurred or declined vision, galactorrhea, amenorrhea and menstrual disorders. In various types of pituitary adenomas, prolactinoma, mixed tumor and ACTH adenomas were common. The detection of micro-adenoma is difficult, and most of them were equal density or low density lesions. Enhanced early pituitary gland showed a limited low density area, with clear boundary; CT plain scanning of large adenomas showed supra sella cistern hemorrhage, with complete capsule and clear boundary, showing homogeneous density or slightly higher density region. The TIWI of micro-adenomas and large adenomas showed low signal or slightly low signal, and T2WI showed high or equal signal; Enhanced scan showed limited low density region, with clear boundary. Conclusion Pituitary adenomas have certain clinical features and they easily occur in women of reproductive age. Most of them are macroadenomas. Patients have dizziness, vomiting, blurred or declined vision, galactorrhea, amenorrhea, menstrual disorders and other symptoms. CT and MRI imaging manifestations of pituitary adenomas have certain characteristics, which can well display necrosis, cystic change and hemorrhage. Both of the two methods are feasible for clinical examination of adenomas.