My mother was diagnosed with MMMT - uterine in 1987. We had her with us January 2000. She did have a reoccurence in the area of her spine in 1994, I think.
So even though it is an aggressive cancer which I thought meant "quick" I personally changed that definite to mean "it won't really go away".
I myself am a breast cancer survivor having been diagnosed and treated in 2001. No one has ever suggested there is a relationship between Mom's MMMT and my breast cancer, though.