The singing actor posted Nov. 21, "[My wife] Deb said to get the mark on my nose checked. Boy, was she right! I had a basil cell carcinoma. Please don't be foolish like me. Get yourself checked. And USE sunscreen!!!"
Jackman also included a photo of himself following a procedure to remove the basal cell.
Basal cell carcinoma, according to the Mayo Clinic, "is a type of skin cancer. Basal cell carcinoma begins in the basal cells — a type of cell within the skin that produces new skin cells as old ones die off. Basal cell carcinoma often appears as a waxy bump, though it can take other forms. Basal cell carcinoma occurs most often on areas of the skin that are often exposed to the sun, such as your face and neck. Most basal cell carcinomas are thought to be caused by long-term exposure to ultraviolet (UV) radiation from sunlight. Avoiding the sun and using sunscreen may help protect against basal cell carcinoma."
Mayo Clinic also warns that "rare, aggressive forms of basal cell carcinoma can invade and destroy nearby muscles, nerves and bone. Very rarely, basal cell carcinoma can spread to other areas of the body."