A 65-year-old man initially presents with shortness of breath. Initial chest x-ray showed cardiomegaly with an incidental nodule, for which follow-up CT was recommended.

A 67-year-old woman presents with a sore throat.

A 4-month-old baby presents as an outpatient with new-onset seizures.

A 49-year-old woman with a history of HIV presents with facial pain.

A 69-year-old woman with severe headache and fever presents to the emergency department.

A 31-year-old woman with headaches and weakness.

A 63-year-old man with a headache.

A 55-year-old man with one year of progressive lower back pain.

A 29-year-old male unrestrained driver ejected in rollover motor vehicle collision after a high-speed chase by police.

A 50-year-old man with no prior medical history presents with a gradual change of personality over the past few months. His wife reports that he has become more fatigued, forgetful, and irritable.

A 19-year-old woman with a history of severe asthma was transported to the emergency room after intubation at home after being found down. Patient was admitted to the medical intensive care unit, and a portable head CT was performed after patient was stabilized.

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 40-year-old man with history of hypertension and diabetes presents after several hours of right-sided weakness, ataxia, and dysarthria.

A 50-year-old man presents with acute aphasia and right-sided weakness.

A 5-year-old boy with an abnormal eye exam.

A 40-year-old man with headache.

A 72-year-old woman with history withheld.

A 16-year-old girl with seizures.

A 67-year-old woman with a bump on her head.

A 6-month-old male infant presents to the emergency room with three days of lethargy and one month history of diarrhea.