文档介绍：MRI对侵袭性垂体瘤的诊断价值及其临床意义
(作者:___________单位: ___________邮编: ___________)
作者:陈静静常光辉葛艳明隋庆兰
【关键词】垂体肿瘤;磁共振成像;诊断
[摘要]目的研究MRI对侵袭性垂体瘤的诊断价值及其意义。方法 29例经手术病理证实的侵袭性垂体瘤病人, T的MRI机,选用自旋回波行矢状位、轴位和冠状位T1 WI,轴位或冠状位PDWI、T2 WI,增强后行矢状位、轴位或冠状位T1 WI扫描,并与手术病理资料对比分析。结果肿瘤多为等T1 等或长T2 信号。增强扫描呈均匀或不均匀强化。向周围组织浸润表现为鞍底受侵下陷,部分肿瘤突入蝶窦;颈动脉包绕,海绵窦受累;鞍隔突破等。10例MRI示0级浸润病例,术中证实均无海绵窦侵犯;14例MRI示1级浸润病例,3例证实肿瘤侵犯海绵窦,并包绕颈内动脉;20例MRI示2级海绵窦侵犯病例,15例证实有海绵窦侵犯;9例MRI示3级浸润病例,8例证实肿瘤侵入海绵窦及颈内动脉外侧间隙;5例MRI示4级浸润病例,术中证实均有海绵窦侵犯,并包绕颈内动脉。结论 MRI可为术前诊断垂体瘤的侵袭性提供依据,对选择手术方法和制定治疗方案有重要指导意义。
[关键词] 垂体肿瘤;磁共振成像;诊断
[ABSTRACT]ObjectiveTo assess the value and significance of MRI imaging in the diagnosis of invasive pituitary adenoma. MethodsTwenty-nine patients with invasive pituitary adenoma confirmed by surgery and pathology were imaged with sagittal, co-ronal T1 WI, or coronal PDWI and T2 WI, sagittal, coronal or T1 WI after Gd-DTPA injection, spin-echo sequences, using T MRI scanner. MRI findings were analyzed pared with surgical and pathological results. ResultsThe MRI appearance of the tumors was equal signal intensity in T1 WI, equal or high signal intensity in T2 WI, and even or uneven enhancement after Gd-DTPA injection. MRI findings included invasion of the sella turcica and adjacent bones, involvement of sphenoid sinus and cavern-ous sinus, encasement of internal carotid artery. Ten patients with grade-0 invasion on MRI were found