Eleven-year-old Harry is complaining of a

severe sore throat and gets to stay home from school. His pediatrician

prescribes a course of broad-spectrum antibiotics, and Harry feels much better

within a few days. However, some two weeks later, Harry has a dull, bilateral

pain in his lower back and his urine is a smoky brown color. On the basis of

Harry's signs and symptoms, diagnose his condition and draw the

relationship (if any) between his present condition and his earlier sore

throat