An 18-year-old woman presented with dizziness.

A 53-year-old woman presented with epistaxis, nasal congestion, and cough.  

69-year-old woman presented with acute onset confusion and memory loss.

A 44-year-old man presented with a one-month history of unsteady gait and recurring falls.

A 40-year-old man presented with sensorineural hearing and vision loss. There was retinal tortuosity and iris atrophy on physical examination.

A 60-year-old woman with a past medical history of hypertension and type 2 diabetes mellitus presented with diabetic ketosis, later developing right-eye proptosis, swelling, and blurry vision.  

A 75-year-old man presented with dizziness and left-side tinnitus.

A 54-year-old man with a previous medical history of malignant hypertension, systemic lupus erythematosus (SLE), and stage IV chronic kidney disease (CKD IV)  presented with type B dissection in the setting of severe hypertension and new-onset loss of vision.

A 61-year-old man presented with a fever, neck pain, and a palpable neck mass.

A 66-year-old woman presented with gradually worsening vision.

60-year-old woman presented with unilateral arm/leg weakness.

A 68-year-old man with a prior history of brain surgery presented with unsteady gait and occasional headaches.

A 66-year-old man presented with chronic sinusitis. 

A 38-year-old man presented with back pain, radiculopathy, and fever.

An 84-year-old man presented with a four-month history of hoarseness following urologic surgery.

A 59-year-old man with sudden onset left-sided weakness that started two hours prior.

A 62-year-old man with progressive vertigo, ataxia, and cognitive decline over a few months. 

A 51-year-old woman with no significant past medical history presents with loss of consciousness, fall, nausea/vomiting, and abdominal pain.

A 29-year-old man with frequent episodes of complex partial seizures.

A 61-year-old man with an incidental finding on a head CT performed for an unrelated reason.