Abstract
We have reported a patient suffering from a brain tumor with the main complaint of right pulsatile tinnitus. Pure tone audiometry gave results within the normal renge, and no abnormal findings were obtained in the ABR and nystagmus tests. Since the tinnitus was persistent, we conducted an MRI examination, which revealed a tumor shadow extending from the left frontal lobe to the parietal lobe. The pathological examination conducted after craniotomy revealed a meningioma with extremely abundant neovascularization. The tinnitus ameliorated postoperatively, and then eventually disappeared. It was inferred that the right middle meningeal artery grew larger as a collateral vessel and that increased blood flow through the said artery was felt as pulsatile tinnitus by the right ear opposite to the tumor. In cases with persistent pulsatile tinnitus in whom no abnormalities are detected by audiometry, precise examination should be performed by MRI, etc., taking into consideration possible intracranial diseases.
