Case:  18-year-old Arthur comes to the emergency department complaining of sudden onset pain in his testicles that woke him up at 4 am.  Arthur had noticed that part of his testicle appeared swollen when he awoke. This concerned him, since he didn’t remember an injury. He tried applying ice, but after a while of no relief, his parents drove him to the local ED. His pain has increased and is now (at 7 …