磁共振成像对侵袭性垂体瘤的诊断价值

The Value of Magnetic Resonance Imaging Diagnosis of Invasive Pituitary Adenomas on

目的：研究伴有出血、坏死等的侵袭性垂体瘤磁共振成像的MRI影像特征,同时评估其向外周侵犯的方式和范围以评价MRI在侵袭性垂体瘤诊断中的价值。方法：回顾分析29例侵袭性垂体瘤患者的临床资料,所有病例均经病理证实。结果：29例侵袭性垂体瘤,肿瘤平均大小2.8cm,范围1.0~7.0cm。其中,8例有坏死和（或）囊变,3例有出血。蔓延和（或）包绕是最常见的侵犯方式。海绵窦是最容易受累的结构（29.4%）,其次是视交叉（21.8%）和斜坡（14.1%）。结论：常规MRI可诊断侵袭性垂体瘤及明确对邻近结构侵犯的方式和范围,从而有助于手术和治疗方案的选择。

Objective：To study the features of magnetic resonance imaging（MRI） of invasive pituitary adenomas presenting with hemorrhage,necrosis,and to evaluate the modality and the extent of invading peripherally as well.Methods： We retrospectively reviewed 29 cases of invasive pituitary adenomas proven by pathology.Results： As for the twenty nine cases of invasive pituitary adenomas,mean size of tumors was 2.8cm,ranging from 1.0 to 7.0 cm.There were 8 cases of necrosis/cystic degeneration and 3 cases of hemorrhage.In general,extension was the most common type of involvement.The cavernous sinus was the most easily involved structure（29.4%）,followed by optic chiasm（21.8%） and clivus（14.1%）.Conclusions： Conventional MRI can make diagnosis of invasive pituitary adenomas,display the modality and extension to adjacent structure,and be beneficial to the choice of optimal surgical and treatment plan.