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Dedicated to helping people who face cancer. Learn about cancer research, patient services, early detection, treatment and education at cancer.org.
Learn about cancer at the American Cancer Society. Find information for specific cancer types: breast, colon, lung, prostate, skin, and more.
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.
If you don't have any signs or symptoms, but are worried about your risk of cancer, discuss your concerns with your doctor. Ask about which cancer screening tests and procedures are appropriate for you. Request an appointment. Cancer is caused by changes (mutations) to the DNA within cells.
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.
Find out the basics about cancer, including symptoms, causes and treatments. Learn steps you can take to prevent cancer.
Resources for Patients. We offer authoritative information about your type of cancer as well as information on a wide range of cancer topics and the latest cancer research. Also find NCI-supported clinical trials. For your questions about cancer or help navigating the NCI website, please contact our information specialists.
Caregivers and Family. Download Section as PDF. When Someone You Know Has Cancer. Finding out that someone you know has cancer can be difficult. If you’re very close to the person, this can be a shocking and stressful time for you, too.
Cancer is a leading cause of death worldwide, accounting for nearly 10 million deaths in 2020, or nearly one in six deaths. The most common cancers are breast, lung, colon and rectum and prostate cancers.
Explanations about what cancer is, how cancer cells differ from normal cells, and genetic changes that cause cancer to grow and spread.