Male, 14 years old, with brainstem lesions, yearly follow-up examination. Three nonenhancing T2 hyperintense foci are redemonstrated within the dorsal and left lateral medulla showing no significant interval change in size or morphology. No new lesions are detected. Brain parenchymal morphology and signal characteristics are otherwise unremarkable. No pathologic enhancement is seen. No abnormal extra-axial fluid collections are detected. The ventricles are normal in size and morphology. Mucosal thickening is evident within the left maxillary and bilateral sphenoid sinuses.
No significant interval change in the size or morphology of nonenhancing lesions within the medulla.