Trapper John, M.D. - Season 2 Episode 16 King of the Road
Overview: Hub Wendover arrives at San Francisco Memorial Hospital for treatment for his leg and to be close to his son, Gonzo. Trapper operates on Hub finding his body riddled with cancer. Gonzo and Hub have some issues to deal with. Gonzo can't help but love the Father that supposedly walked out when he was four years old.