Other factors may go into determining the aggressiveness of a melanoma, including whether the skin over the area has formed an open sore and how many dividing cancer cells are found when looking under a microscope.

CNN: Melanoma

KNOXVILLE, Tenn. (AP) He's less than two weeks old, but he shows the telltale signs of a baby agitated and in pain: an open sore on his chin where he's rubbed the skin raw, along with a scratch on his left check.

NPR: Tenn. Hospital Treats Drug-Dependent Babies

Serena Williams, who has lost only one match since her first-round exit at the French Open last year, canceled an outdoor practice session and moved it indoors to test out her sore ankle.

NPR: Djokovic, Sharapova Cruise At Aussie Open