摘要
目的探讨鞍区囊性病变的MRI表现,以提高诊断和鉴别诊断水平。方法回顾性分析43例经手术病理及临床随访证实的鞍区囊性病变,包括17例垂体腺瘤囊变、10例Rathke囊肿、4例囊性颅咽管瘤、3例垂体脓肿、9例空泡蝶鞍,所有病例均行MRI平扫,30例行增强扫描。结果囊性垂体腺瘤主要表现为长T_1长T_2信号,14例有囊壁环形强化;Rathke囊肿、颅咽管瘤、垂体脓肿信号多样,与囊内容物有关;空泡蝶鞍表现为长T_1、长T_2信号,且漏斗无移位。结论鞍区囊性病变的临床和MRI表现特点对术前诊断和鉴别诊断有一定价值。
Objective To evaluate the MRI manifestations of cystic lesions in the sellar region （SRCL）. Methods MRI of 43 cases of SRCL confirmed by histology or clinical follow-up was analyzed retrospectively. The lesions included cystic pituitary adenomas （n=17）, Rathke＇s cysts （n= 10）, craniopharyngiomas （n=4）, pituitary abscess （n=3）, and empty sella （n=9）. Results Cystic pituitary adenomas were hypointense on T1WI and hyperintense on T2WI with 14/17 cases showing contrast enhancement of the cyst wall. Rathke＇ s cysts, craniopharyngiomas and pituitary abscesses demonstrated varying signal intensities on T1WI and T2WI depending on the cyst content. The cerebrospinal fluid in empty sella was T1-hypointense and T2-hyperintense without displacement of the infundibulum. Conclusion MRI findings of SRCL are helpful for differential diagnosis.
出处
《影像诊断与介入放射学》
2010年第6期323-326,共4页
Diagnostic Imaging & Interventional Radiology
关键词
鞍区
囊性病变
磁共振成像
Sellar region
Cystic lesions
Magnetic resonance imaging
