Male, 75 years old. Patient with hearing loss and gait disturbance. Prior MRI findings of an acoustic neuroma. History of cardiac defibrillator. Review of patient's chart indicates history of right intracanalicular acoustic neuroma measuring approximately 7 mm. A subtle area of asymmetric intracanalicular enhancement identified in the right IAC that likely corresponds to small schwannoma referenced patient's clinical history. The lesion measures approximately 4 x 9 mm (image 72, axial series 80832; image 105, coronal series 80833).Nonspecific white matter hypoattenuating foci are seen in bilateral cerebral white matter and the brainstem likely secondary to chronic small vessel disease. No other areas of abnormal enhancement are identified. Mucosal thickening identified in the ethmoid air cells and frontoethmoid recess. The ventricles and basal cisterns are normal in size and configuration.
Subtle area of intracanicular enhancement in the right internal auditory canal likely corresponding to patient's schwannoma per the clinical history.