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KMID : 0942820070060020089
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Journal of Korean Brain Tumor Society
2007 Volume.6 No. 2 p.89 ~ p.94
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Parieto-Occipital Interhemispheric Precuneus Approach to Trigonal Lesions of Lateral Ventricle
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Shin Tae-Sob
Jung Chul-Ku
Kim Hyun-Woo
Park Keung-Suk
Kim Jae-Myung
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Abstract
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Objective：Surgical approaches to trigonal region known to date may cause neurological deficits such as visual field defect, hemiparesis, speech disturbance, acalculia and disconnection syndrome. A parieto-occipital interhemispheric
precuneus approach, however, may not bring about these neurological deficits and can reduce morbidity.
Materials and Methods：A parieto-occipital interhemispheric precuneus approach was conducted on 10 patients with lesions in the trigone and the paratrigonal area(4 cases of trigonal meningioma, 3 cases of high grade thalamic astrocytoma, 2 cases of thalamic glioblastoma and 1 case of paratrigonal ganglioglioma).
Results：No mortality occurred. Surgery-related morbidity such as speech disturbance, hemiparesis, acalculia, visual field defect and disconnection syndrome were not found postoperatively. Visual disturbance was gradually improved in all of 10 cases.
Conclusion：It is deemed that the parieto-occipital interhemispheric precuneus approach is a desirable approach to trigonal lesions as it enables to keep out of critical structures such as optic radiation, splenium and cortex with essential function.
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KEYWORD
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Precuneus approach, Brain tumor, Trigone
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