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Published in: Journal of Neuro-Oncology 2/2019

01-04-2019 | Clinical Study

Adaptation of visual cortex to damage of visual pathways in suprasellar tumors before and after gamma knife radiosurgery

Authors: Herwin Speckter, José Bido, Giancarlo Hernandez, Diones Rivera, Luis Suazo, Santiago Valenzuela, Remberto Escoto, Jairo Oviedo, Cesar F. Gonzalez, Bernd Foerster, Peter Stoeter

Published in: Journal of Neuro-Oncology | Issue 2/2019

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Abstract

Purpose

To demonstrate that lesions of the visual pathways due to suprasellar tumors are accompanied by alterations of the visual cortex and to see if these alterations are reversible after treatment of tumors by gamma knife radiosurgery.

Materials and methods

In 36 patients with peri-optic tumors and defects of their visual fields and in an age-matched control group, magnetic resonance imaging was performed before and after treatment. T1 weighted images were evaluated by voxel-based morphometry and correlated to the degree of visual field defects.

Results

In patients, grey matter density and cortical thickness were reduced in all parts of the occipital cortex, reaching significance (p < 0.05) in the left superior and middle occipital gyri, with correlation to visual field defects. Follow-up scans showed further reduction in all occipital areas.

Conclusion

As in other peripheral lesions of the optic system, damage of the optic pathways affects the visual cortex. A prospective follow-up study is needed to determine if these alterations are reversible after successful tumor treatment.
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Metadata
Title
Adaptation of visual cortex to damage of visual pathways in suprasellar tumors before and after gamma knife radiosurgery
Authors
Herwin Speckter
José Bido
Giancarlo Hernandez
Diones Rivera
Luis Suazo
Santiago Valenzuela
Remberto Escoto
Jairo Oviedo
Cesar F. Gonzalez
Bernd Foerster
Peter Stoeter
Publication date
01-04-2019
Publisher
Springer US
Published in
Journal of Neuro-Oncology / Issue 2/2019
Print ISSN: 0167-594X
Electronic ISSN: 1573-7373
DOI
https://doi.org/10.1007/s11060-019-03092-4

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