After announcing that he was stepping away from broadcasting earlier this month, NFL Hall of Fame wide receiver Randy Moss informed fans Friday that he has been diagnosed with bile duct cancer. He disclosed that he spent six days in the hospital and underwent surgery. Cholangiocarcinoma or bile duct cancer, is a rare, aggressive form of cancer that often affects adults in their 70s and has spread beyond the bile ducts by the time healthcare providers diagnose it. Read on to know more.