What Is Cancer? - NCI - National Cancer Institute
WebOct 11, 2021 · The Definition of Cancer. Cancer is a disease in which some of the body’s cells grow uncontrollably and spread to other parts of the body. Cancer can start almost anywhere in the human body, which is made up of trillions of cells. Normally, human cells grow and multiply (through a process called cell division) to form new cells as the …
Cancer - Symptoms and causes - Mayo Clinic
WebDec 7, 2022 · Overview. Cancer refers to any one of a large number of diseases characterized by the development of abnormal cells that divide uncontrollably and have the ability to infiltrate and destroy normal body tissue. Cancer often has the ability to spread throughout your body. Cancer is the second-leading cause of death in the world.
Cancer - Wikipedia
WebCancer 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.
Cancer - World Health Organization (WHO)
WebFeb 3, 2022 · WHO fact sheet on cancer providing key facts and information on figures, causes, risk factors, prevention, early diagnosis, treatment, palliative care, WHO response.
What is Cancer? | Cancer Basics | American Cancer Society
WebThere 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.
Comprehensive Cancer Information - NCI
WebNCI 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: Types, Causes, Treatment, and Prevention - Healthline
WebJan 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...
What Is Cancer? Symptoms, Signs, Types & Causes - Cleveland Clinic
WebNov 8, 2022 · Overview. Cancer happens when normal cells become cancerous cells that multiply and spread. Cancer is the second most common cause of death in the U.S. But fewer people are dying of cancer now than 20 years ago. Early detection and innovative treatments are curing cancer and helping people with cancer live longer.
All About Cancer | American Cancer Society
WebCancer 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.
Understanding Cancer - NCI
WebWhat 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 …
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