The next day, a contrast-enhanced MRI examination showed diffuse abnormal fluid attenuated inversion recovery (FLAIR) signal and enhancement throughout the sulci and basal cisterns. The non ...

A definitive diagnosis of LMST was defined as any positive CSF cytology or unequivocal MRI findings (leptomeningeal enhancement with subarachnoid nodules, enhancement/clumping of nerve roots or ...

Post-contrast images demonstrated nodular enhancement ... risk for leptomeningeal dissemination. Primary tumor location is an important consideration. Germinomas centered in the basal ganglia ...