Analysis of posterior pituitary hyperintense signal on MRI in patients with growth hormone-secreting and nonfunctional pituitary adenomas
LIN Kun-zhe
YUAN Bang-qing
HUANG Shao-kuan
YANG Guang
YE Zhong-xing
LIN Yang-yang
Abstract：Objective To compare the characteristics of MRI of the posterior pituitary hyperintense signals (PPHIS) between growth hormone-secreting pituitary adenomas (GHPAs) and nonfunctional pituitary adenomas (NFPAs).Method The data of MRI in 45 patients with NFPAs and 16 patients with GHPAs were analyzed retrospectively.Results PPHIS on MRI were observed in 39 patients with NFPAs,of whom,21 (53.8％,21/39) had the suprasellar hyperintense signals on MRI,6 (15.4％,6/39) intrasellar and 12 (30.8％,12/ 39) supra-and infrasellar.PPHIS on MRI were observed in 15 (93.7％,15/16) patients with GHPAs,of whom,13 (86.7％,13/15) had the intrasellar hyperintense signal and 1 (6.7％,1/15) suprasellar and 1 (6.7％,1/15) supra-and infrasellar.There were significant differences in the percentages of the patients with suprasellar,intrasellar and supra-and infrasellar hyperintense signals between the patients with GHPAs and the ones with NFPAs (P＜0.05).The mean lengths were (8.32±3.37) mm in the long axis and (1.67±0.33) mm in the short axis of NFPAs hyperintense signal.And the mean lengths were (5.83± 1.64) mm in the long axis and (2.23±0.75) mm in the short axis of GHPAs hyperintense signal.There were significant differences in the lengths of the long and short axes of hyperintense signal between GHPAs and NFPAs (P＜0.05).Conclusion The growth patterns of NFPAs and GHPAs are different from each other,and the manifestations of their PPHIS pituitary signal on MRI are also different from each other.
Keywords：Nonfunctional pituitary adenomasGrowth hormone-secreting adenomasPosterior pituitaryHyperintense signalMRI
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 158-161 )