A 69-year-old woman with chronic left hearing loss and facial numbness and new mass.

An 87-year-old man with acute-onset altered mental status beginning three hours before admission.

A 53-year-old man with right peripheral appearing facial weakness and vocal cord paralysis.

An 80-year-old man with altered mental status and new-onset seizure one week after a fall.

A 38-year-old man with history of prior left-sided stroke who experienced an episode of sudden unresponsiveness.

A 4-year-old boy with months of headaches, increasing in frequency.

A 5-year-old girl with headache and progressive gait abnormality.

A 48-year-old woman with subacute weakness, pronator drift, dyspnea on exertion, hypoesthesia of her feet, and dysgeusia.

A 58-year-old woman with right-sided vision loss and chest pain.

A 3-month-old female infant with increased head circumference.

A 60-year-old man with worsening left eye problems two months following pituitary surgery.

A 61-year-old man presents to the emergency department with altered mental status.

A 62-year-old man with progressive gait and limb ataxia, scanning dysarthria, and mild cogwheeling.

A 40-year-old HIV-positive man with headache, fever, light sensitivity, nonproductive cough, and altered mental status.

A 64-year-old man found down and unconscious in his apartment.

An 83-year-old woman with diplopia for the past two months.

An 85-year-old woman undergoing surveillance imaging after treatment for sinonasal squamous cell carcinoma.

A 65-year-old woman with decreased peripheral vision for the past two days.

A 60-year-old woman with sudden-onset headache.

A 33-year old man with progressive, bilateral vision loss for the past several months.