摘要
目的：分析垂体脓肿的MRI表现特点。方法：回顾性分析5例垂体脓肿的病例资料，并结合文献探讨垂体脓肿的MRI诊断。结果：本组5例MRI平扫均显示垂体增大，T1WI呈低、稍低或混杂信号，T1WI呈高、稍高或混杂信号。增强扫描病灶均呈环状强化，4例壁薄且较均匀，1例壁较厚且厚薄不均。2例病灶周围出现类圆形强化小子灶，3例累及垂体柄、视交叉。结论：垂体脓肿的MRI增强表现具有一定的特征性。
Objective：To analyze the MRI features of pituitary abscess. Methods： MRI findings and clinical literature of 5 patients with pituitary abscess proved by surgery were analyzed retrospectively. Results：The pituitary volume was increased on pre-contrast MRI with hypointense or iso-hypointense heterogeneous signal on T1WI and hyperintense or iso-hyperintense heterogeneous signal on T2WI. Ring-like enhancement was found in 5 cases. The thickness of the ring wall was thin and well-distributed in 4 cases, very thick and badly-distributed in 1 case. Small satellite foci were found around the main ring-like lesions in 2 cases, optic chiasma and stalk hypophysial were found to be involved in 3 cases. Conclusion： Image findings on post-gadolinium MRI are specific for diagnosis of pituitary abscess.
出处
《中国中西医结合影像学杂志》
2009年第2期81-82,119,共3页
Chinese Imaging Journal of Integrated Traditional and Western Medicine
关键词
垂体脓肿
磁共振成像
Pituitary abscess
Magnetic resonance imaging
