A 77-year-old woman with right-sided abdominal pain.

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

A 55-year-old woman with painless swelling in the right thigh.

A 66-year-old woman with severe pain after awkwardly twisting her knee.

A 38-year-old woman immediately postoperative with shortness of breath.

A 28-year-old man with acute worsening of scrotal swelling.

A 19-year-old man with shortness of breath and a sore throat.

A 52-year-old man with increasing abdominal pain.

A 22-year-old woman with bilateral neck swelling and difficulty swallowing.

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