[Awake surgery with line bisection task for two cases of parietal glioma in the non-dominant hemisphere]

Awake surgery for lesions in the non-dominant parietal lobe is rare. We report two cases of right parietal lobe glioma for which awake surgery was performed in order to avoid ataxie optique and hemispatial neglect due to injury in the superior and inferior parietal lobule, respectively. Among several tests to assess the dysfunction of spatial recognition, line bisection test was selected for the task during awake surgery because of its simplicity, easy repetition, and utility. The tumor was successfully removed without any neurological deficit in both the cases. The line bisection test is simple and useful for preserving spatial recognition during an awake surgery.