垂体脓肿的MRI表现  

MRI findings of pituitary abscess

作　　者：梁辉顺[1] 段青[1] 邹松[1] 卢振华[1] 

机构地区：[1]福建医科大学附属协和医院MR室,福建福州350001

出　　处：《中国临床医学影像杂志》2004年第3期127-128,161,共3页Journal of China Clinic Medical Imaging

摘　　要：目的:分析垂体脓肿的MRI表现特点。方法:回顾4例经手术证实的垂体脓肿病例资料,结合文献对其MRI表现进行分析、讨论。结果:平扫均未见正常垂体,T1WI呈等低混杂信号或等高混杂信号,T2WI呈高信号或高低混杂信号。增强后在主体环状强化灶上方和蛐或两侧形成“子灶”3例,2例伴有视交叉明显强化,1例伴软脑膜强化。结论:垂体脓肿平扫无特征,增强后某些征象具特异性。Objective: To analyze MRI features of pituitary abscess, and to improve its diagnostic accuracy. Methods: MRI findings and clinical materials of 4 patients with pituitary abscess proved by surgery were analyzed retrospectively. Ruselts: Pre-contrast MRI showed iso-hypointense or iso-hyperintense heterogeneous intensity on T1WI and hyperintense or hyper- hypointense on T2WI. Post-gadolinium MRI showed that the satellite foci was found bilaterally or superior to the main ring-like lesion in 3 cases, optic chiamatic enhancement was seen in 2 cases, leptomeningeal enhancement was detected in 1 patient. Conclusion: There were no specific signs of pituitary abscess on conventional MRI. Post-gadolinium shows some MRI findings are specific for diagnosis of pituitary abscess.

关 键 词：脑脓肿 垂体疾病 磁共振成像 

分 类 号：R742.7[医药卫生—神经病学与精神病学] R584[医药卫生—临床医学]