My sister-in-law was just recently diagnosed with lung cancer, and it baffles us because she doesn't smoke, nor anyone close to her does. So its very difficult to accept it because we don't know how she got it. I remembered that my father-in-law died of colon cancer, but that was colon cancer while my sis got lung cancer. Is it possible for a person to inherit a cancer in a different form? Tnx.