Cancer-cured Val Kilmer is facing a fresh medical horror: The deadly tumors that devoured his face may have spread through his body!

That is the opinion of a renowned oncologist who warned if Christian Scientist Kilmer continues to put off traditional medicine — relying instead on prayer-based healing — he could die!

“If the cancer has spread beyond the head and the neck into the lymph nodes and other parts of the body, it’s rarely, if ever, curable,” said Dr. Jerome Spunberg, who has not treated Kilmer but reviewed his case for Breaking Celebrity News.

“He may have reached the point of no return.”

Breaking Celebrity News first reported nearly two years ago the Top Gun star had a cancerous tumor in his throat — prompting Kilmer, 57, to deny the report and insist he’d never even had the disease!

Photos of Kilmer reveal his skeletal appearance and efforts to cover up his illness by wrapping his throat in scarves.

Last fall, Oscar winner Michael Douglas, who successfully waged his own battle with oral cancer, publicly urged his friend to seek medical care.

But in April, the Batman Forever actor finally said he’d had a “healing of cancer”, insisting it was behind him thanks to the power of prayer.

He even spoke of plans to reprise his role as “Iceman" in the Top Gun sequel!

“People that know I am a Christian Scientist make the assumption that I have somehow endangered myself,” he wrote in an online post to concerned fans. “But many, MANY people have been healed by prayer throughout recorded history.”