Amazing colossal Man DVD (1957)

Lt. Colonel Glenn Manning is inadvertently exposed
to a plutonium blast during a test at camp Desert Rock. Though burned
over 90 percent of his
body, he survives the horrible ordeal. Amazingly after his first night in the hospital, the
burn tissue is completely healed. Manning does not escape the effects of
the radiation blast for long. He suddenly begins to grow in size
uncontrollably to a height of 50 feet. As a result his heart is not able
to keep pace with his
growth and the blood supply to his brain is insufficient. Manning
quickly descend into madness as a result and wreaks havoc upon Las
Vegas. Can this atomic mutation be stopped?

1957, 80 Minutes