Analysis of MRI characteristics and visual function in patient with pituitary adenomas
ZHANG Hai-hong
MA Lei
ZHANG Wei
GUO Kang
HENG Li-jun
JIA Dong
Abstract：Objective To investigate the relationship of the size of the pituitary adenoma and the height of the chiasm with the visual function. Methods The clinical data of 136 patients with pituitary adenomas undergoing transsphenoidal surgery were analyzed retrospectively, including MRI and visual function data and so on. The visual field was examined by Humphrey perimetry in all the patients. The tumors vertical height serving as tumours size and chiasm central height were determined on coronal MR T1WI. The relationship of the visual function with the timorous size and the optic chiasm central vertical height was analyzed. Results The pituitary adenoma of which the vertical height was less <2.15 cm caused little or no visual impairment. The bitemporal visual field loss was significantly more severe in the patient with optic chiasm central height >1.4 mm than that in the patient with optic chiasm central height<1.4 mm. Conclusion It is suggested that the pituitary adenoma of which the vertical height on coronal MR T1WI is more than 2.15 cm should be removed by surgery because it may cause the visual field defect.
Keywords：Pituitary adenomaVisual field defectTrans-sphenoidal surgeryTumorous sizeMRI
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 27-29,33 )