From the AP, via JEMS:
An Australian rescue team swooped into Antarctica on Thursday to evacuate an American experiencing a medical emergency at a U.S. scientific base in a rare midwinter rescue from the frozen continent.
The specialist medical team from the Australian Antarctic Division left Christchurch, New Zealand, on Thursday morning and landed on an ice runway near the U.S. McMurdo research station in the early afternoon, said Deborah Wing, spokeswoman for the U.S. National Science Foundation, which runs the station.
The patient, whose identity has not been released, is in stable condition, but may need “immediate corrective surgery,” according to the foundation. Wing said she could not give any additional details on the patient or the nature of the medical emergency, due to privacy laws.