A case of malignant glioma caused by subarachnoid hemorrhage

Abstract

A 43-year-old man with a sudden onset of severe headache followed by epileptic seizures was admitted to our hospital. CT showed subarachnoid hemorrhage predominantly located in the left Sylvian fissure and a low-density area in the left parietal lobe with slight subarachnoid hemorrhage. The source of the hemorrhage was undetected; however, cerebral angiography revealed a tumor stain and an early venous filling in the left parietal region. Contrast-enhanced MRI showed a ring-shaped enhancement in the left parietal lobe. A malignant glioma was suspected, and surgical resection was performed. The diagnosis was malignant glioma, and the patient underwent postoperative chemoradiotherapy. Although rare, malignant glioma is an important differential diagnosis for “angiogram-negative SAH.”