My Husband has a fatty mas at his lower back ,a bit smaller than a size of a Fisk, it's like excess skin,right around his spine.he has some xray done but its not attached to the spine,its just a mass. it normally gives him pain if he sleep on his back, so he always need to sleep sideways. He had it since he was a child, it didn't cause him any problem but recently it gives him back pain. it also grew a little. could this be lipoma or lymphoma? thanks