脑垂体脓肿15例CT和MRI表现及临床病理研究  

CT and MR features of pituitary abscess and clinical pathological analysis

作　　者：杜绍楠[1] 班允超[1] 李龙[1] 刘佳[1] 赵正[1] 韩圣[1] 李志鹏[1] 景治涛[1] 

机构地区：[1]中国医科大学第一附属医院神经外科,沈阳110001

出　　处：《陕西医学杂志》2013年第1期104-107,共4页Shaanxi Medical Journal

基　　金：国家自然科学基金(No 81101917/H1618)

摘　　要：目的:探讨脑垂体脓肿的影像学特点。方法 :15例经手术和病理证实的垂体脓肿患者,术前均行CT扫描和鞍区MRI平扫及增强扫描。结果 :CT示7例鞍区呈等密度,5例呈低密度,1例呈略高密度病灶,2例呈混杂密度病灶,边界均清楚;MRI示11例长T1,长T2信号,2例呈等T1,长T2信号,13例显示增强后可见囊壁环形强化,且冠状位上均可见垂体柄增粗及强化,为中枢性尿崩提供了形态学上的线索。结论:垂体脓肿的影像学有特征性,术前CT提示鞍区边界清楚的等密度或略高密度病灶,鞍区磁共振及增强示类圆形囊状占位性病变,等或长T1,长T2,囊壁呈环形强化,伴蝶窦内粘膜增厚等,尤其是术前合并尿崩者应考虑垂体脓肿的诊断。Objective： To analyze CT and MRI features pituitary abscess. Methods： 15 cases of pituitary abscess were all proved by operation and pathology,All cases were examined by CT/MR plan scan and MR contrast scan before opertion. Results： 7 cases appered isodensity on CT plan scan in pituitary area, 5eases showed hypoin- tensity , 1cases showed hyperintensity and mixed density in 2 cases with clear edge. 11 cases showed high T1WI and high T2WI signal, 2cases showed equal TlWI and high TzWI signal on MRI , 13cases showed contrast show ring shape enhancement and showed ＂pear sign＇at coronal position. Conclusion： The onset of pituitary abscess has an obvious tendency of increasing. A diagnosis of pituitary abscess should be seriously considered when radiographic features shows a sellar mass, iso or hyperintense on T1-weighted images, hyperintense on T2-weighted images, ring enhancement and so on.

关 键 词：脓肿 病理学脓肿 放射照像术体层摄影术 X线计算机磁共振成像垂体 

分 类 号：R742.7[医药卫生—神经病学与精神病学]