Teenage boy presents with hoarseness.

A male neonate with extremity and craniofacial deformities.

A 62-year-old man with a history of right craniectomy presents with headache, poor concentration, left-sided weakness, and facial droop.

A man presents with headache.

A previously healthy girl with progression (over several days) of multiple symptoms, including extremity pain, difficulty speaking, nausea, vomiting, progressive confusion, and altered mental status.

A man in his early 80s with confusion but no other neurological symptoms or deficits.

A 9-year-old girl with Crohn's disease, acute myeloid leukemia, and neutropenia presents with altered mental status.

A 9-year-old boy with recurrent episodes of right-sided numbness and weakness.and weakness.

A 9-month-old girl with abnormal head shape undergoing imaging evaluation.

An 8-year-old girl with headaches for the past several weeks and nausea and vomiting for the past several days.

An 89-year-old woman after a ground-level fall.

An 88-year-old woman with involuntary shaking of the right lower extremity.

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

An 85-year-old woman with history of spinal stenosis.

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

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

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

An 83-year-old man with coronary artery disease and a prior transient ischemic attack.

An 82-year-old woman after a syncope episode in which she fell backward and hit her head.

An 81-year-old woman with syncope and hearing loss.