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目的回顾性分析36例经病理证实的鞍区病变的影像学表现,探讨MRI对该区肿瘤的诊断价值。方法收集经手术病理证实的鞍区病变36例,其中垂体瘤22例,脑膜瘤4例,颅咽管瘤4例,脊索瘤2例,表皮样囊肿2例,垂体脓肿1例,脑囊虫1例。全部经MRI平扫和增强扫描。结果鞍区病变MRI图像上也有各自的形态特征、信号特点;各种肿瘤与周围结构的关系及局部侵犯方向、范围也各有不同,多为等T1等或长T2信号,增强扫描呈均匀或不均匀强化。结论 MRI的多序列、多方位成像能够显示鞍区各种肿瘤的影像学特征,并能为该区肿瘤的诊断与鉴别诊断提供重要依据。
Objective To retrospectively analyze the imaging findings of the pathologically confirmed sellar region in 36 cases and evaluate the diagnostic value of MRI in this area. Methods Thirty-six cases of pathologically confirmed saddle-zone lesions were collected. Among them, there were 22 cases of pituitary adenoma, 4 cases of meningioma, 4 cases of craniopharyngioma, 2 cases of chordoma, 2 cases of epidermoid cyst, 1 case of pituitary abscess and 1 case of cerebral cysticercosis. . All by MRI plain scan and enhanced scan. Results The saddle area lesion MRI images also have their own morphological characteristics, signal characteristics; the relationship between various tumors and the surrounding structure and the direction of local invasion, the scope is also different, mostly equal to T1 or T2 signals, enhanced scan was uniform or Unevenly enhanced. Conclusion MRI multi-sequence and multi-directional imaging can display the imaging features of various tumors in the sellar region and provide an important basis for the diagnosis and differential diagnosis of the tumors in this region.