PRIMARY BRAIN-TUMORS IN 2 DOGS TREATED BY SURGICAL RESECTION IN COMBINATION WITH POSTOPERATIVE RADIATION-THERAPY

Primary brain tumors in two dogs were surgically removed followed by p ostoperative radiation therapy. The two tumors were confirmed histolog ically to be astrocytoma and meningioma, respectively. After the surge ry, the neurological status of each dog improved dramatically and a to tal dose of 40 Gy was delivered to the surgical site to treat residual tumor tissue. Although the dog with astrocytoma died 6 months after s urgery due to unknown causes, the dog with meningioma has lived for ov er 24 months with a degree of neurological disorder less severe than t hat before treatment. These results suggested the effectiveness of thi s type of therapy on brain tumor in dogs and therapeutic modality shou ld be positively planned to treat canine brain tumors.