摘要
目的:评价垂体大腺瘤患者在T加权MR像上垂体后叶高信号的显现率及其定位,以指导外科手术。材料1和方法:回顾69例经手术和病理证实的垂体大腺瘤患者,术前作MRT加权成像,包括无功能腺瘤23例,多功能腺瘤131例,泌乳素瘤15例,卵泡生成素瘤8例,生长素瘤6例,促黄体生成素瘤3例,促甲状腺素瘤1例。肿瘤高度大于20mm者54例,为A组,小于或等于20mm者15例,为B组。结果:69例垂体大腺瘤中,T加权像显示垂体后叶高信号为351例(50.72%),其中A组显示23例(42.59%),B组显示12例(),两组比较有显著差异(2=6.597P<0.0180%χ,)。其高信号位于鞍外在A组为23例(69.57%),高信号位于鞍内在B组为11例(91.67%)。结论:在垂体大腺瘤患者MRT加权像上垂体1后叶高信号的显示有助于指导外科手术,在较小的垂体瘤,高信号的显示率要高于较大的垂体瘤。
Objective: To evaluate the demonstration rate and location of bright spot in the posterior pituitary lobe on T1-weighted MR images in patients with pituitary macroadenomas which is a possible guide to neurosurgery. Materials and Methods: Sixty-nine patients with pituitary macroadenomas showed on T1-weighted MR images, proven surgically and pathologically, were studied retrospectively. The classification of tumors include nonfunctioning(23 cases); multi-functioning(13 cases); prolactin secreting(PRL)(15 cases); follicle-stimulating hormone(FSH)(8 cases); growth hormone(GH)(6 cases); luteinizing hormone (LH)(3 cases) and thyroxin-stimulating hormone(TSH)(1 case). Results: Of all cases, a bright spot of the posterior pituitary lobe on T1-weighted MR images was showed in 35 cases(50.72%), in 23 of 54 cases(42.59%) with a macroadenoma>20mm in height(group A) and in 12 of 15 cases(80%) with a macroadenoma≤20mm in height(group B). There is a significant difference between group A and group B(χ2=6.597, P<0.01). In group A, the bright spot situated outside of the sella in 16 cases (69.57%); In group B, the bright spot located within the sella in 11 cases(91.67%). Conclusion: The demonstration rate of the pituitary bright spot on T1-weighted MR images in a smaller macroadenoma is higher than in a larger one and which is helpful for a possible guide to neurosurgery.
出处
《中国临床医学影像杂志》
CAS
2004年第2期68-71,共4页
Journal of China Clinic Medical Imaging
关键词
垂体肿瘤
磁共振成像
pituitary neoplasms
magnetic resonance imaging
