For Oregonian Steffenie Jenkins and her family, life changed forever when her 21-year-old son, Jacob, was diagnosed with bronchiolitis obliterans, a rare and devastating lung disease. The condition causes irreversible scarring in the lungs, making it harder and harder for Jacob to breathe. After months of testing, biopsies, and uncertainty, Jacob finally has a diagnosis — but the road ahead is long and difficult. His doctors at the Mayo Clinic have determined that he is critically ill and must...