Case Presentation: A 27-year-old man with metastatic gastroesophageal junction adenocarcinoma presents with five weeks of progressively worsening bilateral thigh pain. Admission exam is notable for a normal neurological exam. Labs are notable for CSF with malignant cells. Brain and spine MRI reveal diffuse leptomeningeal carcinomatosis. During his hospitalization, the patient develops dizziness and leg weakness […]