Julian McMahon’s cause of death has been ruled as natural and that he “died from lung metastatis as a result of head and neck metastatic cancer.” This means that the cancer first formed in the head and neck and then spread to the lung.

Actor Julian McMahon, best known for his roles in "Nip/Tuck" and "Fantastic Four," has died at age 56 after a "valiant" battle with cancer.

He played a half-human, half-demon in the WB supernatural series “Charmed” and a playboy plastic surgeon in the FX series “Nip/Tuck.”