“Most cancers are solid—a collection of mutated cells that grow out of control and form a tumor. The six most common cancers—breast, lung, prostate, colorectal, melanoma and bladder—are solid cancers that account for almost 1 million new cases a year. Cancers that are not considered solid cancers are often lumped together in the category of blood cancers: leukemia, lymphoma and myeloma. ”

Cancer Treatments of America