A 41-year-old man with big-toe pain since a fall two weeks ago.
A 39-year-old man with acute-onset severe low back pain for three weeks.
A 26-year-old man with two years of intermittent and progressive sharp left foot pain.
A healthy 15-year-old boy with a two-week history of a persistent, productive cough.
A 55-year-old woman with painless swelling in the right thigh.
