A doctor forced to treat herself for breast cancer while trapped on a South Pole research station has been diagnosed with a new outbreak of the disease. Jerri Nielsen, a U.S. citizen, took a one year sabbatical to be the physician for a research team based at the South Pole in 1999. After transport to the station was cut off for the winter, Nielsen discovered a lump in her breast. She was forced to give herself a biopsy and treat herself with chemotherapy drugs that were air-dropped in. Nielsen left the station in October 1999 and wrote the book Ice Bound: A Doctor's Incredible Story of Survival at the South Pole, which inspired the move Ice Bound starring Susan Sarandon. [Yahoo News]