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Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. These contrast with benign tumors, which do not spread. Possible signs and symptoms include a lump, abnormal bleeding, prolonged cough, unexplained weight loss, and a change in bowel movements.
There are two main categories of cancer: Hematologic (blood) cancers are cancers of the blood cells, including leukemia, lymphoma, and multiple myeloma. Solid tumor cancers are cancers of any of the other body organs or tissues. The most common solid tumors are breast, prostate, lung, and colorectal cancers.
NCI is the nation’s trusted source for cancer information. We are here for you with information about causes and risk factors, symptoms, how cancer is diagnosed, and treatment options. Find a Cancer Type. Treatment. Side Effects. Causes & Prevention. Diagnosis & Staging. Find a Clinical Trial.
Cancer information, answers, and hope. Available every minute of every day. Learn about cancer at the American Cancer Society. Find information for specific cancer types: breast, colon, lung, prostate, skin, and more.
Jan 17, 2023 · What is cancer? Cancer is a large group of diseases that occur when abnormal cells divide rapidly and can spread to other tissue and organs. These rapidly growing cells may cause...
Understanding Cancer | What Is Cancer? | American Cancer Society. All About Cancer. Understanding Cancer. In the United States, 1 in 3 people will be diagnosed with cancer during their lifetime. Here is some information to help you better understand what cancer is. Learn About Cancer. Cancer is more than just one disease.
What Is Cancer? Understand how cancer cells differ from normal cells and genetics changes that cause cancer to grow and spread. Cancer Statistics. Basic information about cancer statistics in the United States and how they are used to understand the impact of cancer on society and to develop strategies that address the challenges that cancer poses.
