A carcinoma begins in the skin or the tissue that covers the surface of internal organs and glands. Carcinomas usually form solid tumors. They are the most common type of cancer, this include prostate cancer, breast cancer, lung cancer, and colorectal cancer.

Sarcoma is a tumor that affects connective tissue. Soft tissue sarcomas, as the name suggests, affect the soft tissues; these include fat, muscle, blood vessels, deep skin tissues, cartilage, tendons, and ligaments. Sarcomas are a relatively rare type of cancer.

Lymphoma is a cancer that begins in the lymphatic system. The lymphatic system is a network of vessels and glands that help fight infection. There are two main types of lymphomas: Hodgkin lymphoma and non-Hodgkin lymphoma.

Leukemia is a cancer of the blood. Leukemia begins when healthy blood cells change and grow uncontrollably. The four main types of leukemia are acute lymphocytic leukemia, chronic lymphocytic leukemia, acute myeloid leukemia, and chronic myeloid leukemia.