Types of Cancer

The major types of cancer are carcinoma, sarcoma, melanoma, lymphoma, and leukemia. Carcinomas — the most commonly diagnosed cancers — originate in the skin, lungs, breasts, pancreas, and other organs and glands. Lymphomas are cancers of lymphocytes. Leukemia is a cancer of the blood. It does not usually form solid tumors. Sarcomas arise in bone, muscle, fat, blood vessels, cartilage, or other soft or connective tissues of the body. They are relatively uncommon. Melanomas are cancers that arise in the cells that make the pigment in the skin.

Use the menu below to find the guide you are looking for. The first tab offers some common diagnoses, but if you don’t see your specific diagnosis there, please use the Alphabetical tabs to see the entire list of Cancer Society guides.

Bladder cancer begins when healthy cells in the bladder lining—most commonly urothelial cells—change and grow out of control, forming a mass called a tumor. Urothelial cells also line the renal pelvis and ureters. Cancer that develops in the renal pelvis and ureters is also considered a type of bladder cancer and is often called upper tract bladder cancer.
Breast Cancer begins when healthy cells in the breast change and grow out of control, forming a mass or sheet of cells called a tumor. A tumor can be cancerous or benign. A cancerous tumor is malignant, meaning it can grow and spread to other parts of the body. A benign tumor means the tumor can grow but will not spread.
Colorectal cancer begins when healthy cells in the lining of the colon or rectum change and grow out of control, forming a mass called a tumor.
Kidney cancer begins when healthy cells in 1 or both kidneys change and grow out of control, forming a mass called a renal cortical tumor.
NSCLC begins when healthy cells in the lung change and grow out of control, forming a mass called a tumor, a lesion, or a nodule. A lung tumor can begin anywhere in the lung.
Lymphoma is a cancer of the lymphatic system. Lymphoma begins when healthy B cells, T cells, or NK cells in the lymphatic system change and grow out of control, which may form a tumor.
Pancreatic cancer is a disease in which healthy cells in the pancreas stop working correctly and grow out of control. These cancerous cells can build up and form a mass called a tumor.
The prostate is a walnut-sized gland located behind the base of a man’s penis, in front of the rectum, and below the bladder. It surrounds the urethra, the tube-like channel that carries urine and semen through the penis. The prostate’s main function is to make seminal fluid, the liquid in semen that protects, supports, and helps transport sperm.