First discovered ten years ago in a tribe native to New Zealand, this rare form of cancer has the potential to wipe out an entire family if they are caught too late. Now cases of Hereditary Diffuse Gastric Cancer Syndrome (HDGC) are discovered all over the world including here in the United States. CBS News medical correspondent Dr. Jennifer Ashton is the story of a family, which underwent a major operation to prevent the disease and the protection of future generations.