60-year-old male with ventricular ependymoma. Yearly follow-up. There is no restricted diffusion on DWI sequences.Again seen is a nonenhancing T2/FLAIR hyperintense oval lesion along the lateral wall of the left lateral ventricular body which measures 8 mm x 11 mm x 4 mm (series 8, image 26 and series 6, image 15) unchanged when remeasured in a similar manner. An additional 4 mm nonenhancing lesion with similar T2/FLAIR hyperintensity located more posteriorly is unchanged (series 8, image 21). The third previously noted lesion located more anteriorly within the left lateral ventricle is not well visualized on current images (series 1001, image 72). Previously referenced 6 mm x 11 mm T2 and FLAIR signal hyperintense lesion in the right centrum semiovale is stable compared to prior exam. No new intraparenchymal lesions are identified. Scattered periventricular and subcortical punctate hyperintense white matter lesions on the FLAIR and T2 images are also unchanged.Normal vascular flow voids are present in the distal carotid and vertebral arteries, the basilar artery and the proximal anterior, middle and posterior cerebral arteries as well as the internal cerebral veins and superior sagittal sinus.The visualized portions of the paranasal sinuses show a small mucus retention cyst in the left maxillary sinus.
1. No significant interval change in nonenhancing left lateral ventricle subependymal lesions, with one of the previously noted lesions not well visualized on the current study. 2. Unchanged small right centrum semiovale lesion. 3. Scattered periventricular and subcortical white matter changes are again seen, nonspecific. 