the number of cancer survivors in the U.S. will top 18 million by 2022.
that's according to a new report from the american association for cancer research that tracks trends in cancer survival rates.
that's an increase of 31-percent from last year ... when there were over 13 million americans with a history of cancer.
experts say the bump will mostly be due to the aging population ... projecting that two-thirds of survivors will be over the age of 65.
however, rates are not the same for all types of cancer -- with breast cancer accounting for 22-percent of survivors while lung cancer makes up only three percent of the total.