鞍区占位性病变的MRI诊断分析

目的 探讨鞍区占位性病变的MRI诊断价值及鉴别诊断.方法 回顾性分析75例经手术病理证实的鞍区占位性病变的MRI表现.结果 检出垂体瘤32例,颅咽管瘤12例,脑膜瘤12例,生殖细胞瘤5例,表皮样囊肿3例,Rathke囊肿3例,星型细胞瘤2例,室管膜瘤2例,垂体脓肿2例,错构瘤2例.不同的鞍区占位性病变的MRI影像特征对诊断有主要价值；病变来源的判断可帮助定性诊断.结论 MRI对鞍区占位性病变的发病部位、形态特征、大小范围、生长方式及与周围组织结构关系显示清晰明了,能对其定位、定性作出较为全面正确的诊断.

MRI DIAGNOSIS OF SELLAR-AREA OCCUPYING LESIONS

Objective To discuss the MRI diagnostic value and differential diagnosis of the sellar-area occupying lesions.MethodsThe MRI findings of 75 cases sellar-area occupying lesions proved by surgery and pathology were studied retrospectively.Results32 cases of pituitary adenoma,12 cases of craniopharyngioma,12 cases of meningioma,5 cases of germinoma,3 cases of epidermoid cyst,3 cases of Rathke cyst,2 cases of astrocytoma,2 cases of ependymoma,2cases of pituitary abscess and 2 cases of hamartoma were detected.The imaging features of different sellar-area occupying lesions had diagnostic value,and the sources of lesions could help make qualitative diagnosis.Conclusion MRI can clearly display sellar-area occupying lesions’ positions,morphological features,dimensions,growth patterns and the relation to adjacent tissues,and can help make positioning and qualitative diagnoses.