Hi, I'm sorry I don't know anything about this, but....I know how scary hearing that can be! Please don't worry yourself too much just yet, let the docs investigate further b/c you don't know yet if it really is cancer. It could be something else.
I had severe ankle problems for years, sometimes it was so bad I wanted it amputated. Well, go forward about 18 yrs when I finally had an MRI done on my right one....I had all sorts of issues in there, including lesions on my talar dome (part of the ankle joint). When my podiatrist told me I had lesions in there, my jaw dropped and I started panicing. Now he did NOT mention anything about cancer, but I heard that word & cancer was the first thing running thru my mind. Then the doc noticed my worries and explained that mine had nothing to do with cancer. Mine were lesions on the bone and cartilage. He said essentially they were spots of bone death either from severe injury or severe arthritis. WEll, I never did anything to injure that ankle. But it causes pain in there and also locking up of my ankle joint sometimes as I walk. SO now I wear a brace. I have no idea if something similiar could happen in the spine cartilage. But even so, it could be something else entirely different than this or cancer.