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The outcome of treatment for malignant brain tumors is still disappointing. For this reason, total removal of the tumor is required to obtain a better outcome. It is acknowledged that en bloc total removal of a tumor by lobectomy results in a better outcome than subtotal or partial removal. For extensive removal of a tumor, recognition of the location, infiltration, and cleavage of the tumor is very important. We tried to carry out intraoperative ultrasonography in order to obtain data about brain tumors. We examined three cases of glioblastoma in the frontal region, two in the temporal region, and one in the occipital region, and a case of recurrent malignant meningioma in the temporal region.Extra- and intradural intraoperative ultrasonography was carried out, and silastic or plastic tubes were implanted around the tumor under ultrasonographic guidance. Thus en bloc total removal of the tumor was carried out successfuly without any neurological deficit. The application of intraoperative ultrasonography for malignant brain tumors is very useful, and should help to improve postoperative outcome.

Intraoperative Application of Ultrasonography for Total Removal of Malignant Brain Tumors by Lobectomy.