Intraparenchymal schwannomas are extremely rare intracranial tumors. Although their occurrence has been reported in various age groups, they are most frequently seen in individuals under 30 years of age. A 65-year-old woman was brought to the emergency department with impaired consciousness due to spontaneous intracerebral hemorrhage in the right basal ganglia (BG). Approximately 3 months later, the patient was taken to another hospital due to decreased consciousness, and a subsequent brain computed tomography scan showed a mass-like lesion in the right BG. The tumor was removed, and the biopsy result revealed an intraparenchymal schwannoma with no involvement of the ventricular ependymal lining. An immunohistochemical analysis revealed a high Ki-67 labeling index, indicating rapid growth without malignancy.