[ABC News, December 22, 2010] Many hospital patients are being turned away for potentially life-saving injection treatments in what may be the largest U.S. hospital drug shortage in over two decades including chemotherapy drugs like doxorubicin. Mark McKee's doctors have spent 15 years managing his rare abdominal tumor. But in the last year and a half, his tumor grew significantly, so Dr. Craig Howe, McKee's doctor at United Hospital in St. Paul, Minn., upped his treatment to the more aggressive chemotherapy regimen that included doxorubicin. Watch the whole story below and read more online at abcnews.com.