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- Dictionarycancerous/ˈkans(ə)rəs/
adjective
- 1. affected by or showing abnormalities characteristic of cancer: "a cancerous tumour"
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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. [2] [7] These contrast with benign tumors, which do not spread. [7] Possible signs and symptoms include a lump, abnormal bleeding, prolonged cough, unexplained weight loss, and a change in bowel movements. [1]
- Carcinoma
- Sarcoma
- Leukemia
- Lymphoma
- Multiple Myeloma
- Melanoma
- Brain and Spinal Cord Tumors
- Other Types of Tumors
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Carcinomas are the most common type of cancer. They are formed by epithelial cells, which are the cells that cover the inside and outside surfaces of the body. There are many types of epithelial cells, which often have a column-like shape when viewed under a microscope. Carcinomas that begin in different epithelial cell types have specific names: A...
Sarcomas are cancers that form in bone and soft tissues, including muscle, fat, blood vessels, lymph vessels, and fibrous tissue (such as tendons and ligaments). Osteosarcoma is the most common cancer of bone. The most common types of soft tissue sarcoma are leiomyosarcoma, Kaposi sarcoma, malignant fibrous histiocytoma, liposarcoma, and dermatofib...
Cancers that begin in the blood-forming tissue of the bone marroware called leukemias. These cancers do not form solid tumors. Instead, large numbers of abnormal white blood cells (leukemia cells and leukemic blast cells) build up in the blood and bone marrow, crowding out normal blood cells. The low level of normal blood cells can make it harder f...
Lymphoma is cancer that begins in lymphocytes (T cells or B cells). These are disease-fighting white blood cells that are part of the immune system. In lymphoma, abnormal lymphocytes build up in lymph nodesand lymph vessels, as well as in other organs of the body. There are two main types of lymphoma: Hodgkin lymphoma – People with this disease hav...
Multiple myeloma is cancer that begins in plasma cells, another type of immune cell. The abnormal plasma cells, called myeloma cells, build up in the bone marrow and form tumors in bones all through the body. Multiple myeloma is also called plasma cell myeloma and Kahler disease. Our page on multiple myeloma and other plasma cell neoplasmshas more ...
Melanoma is cancer that begins in cells that become melanocytes, which are specialized cells that make melanin (the pigment that gives skin its color). Most melanomas form on the skin, but melanomas can also form in other pigmented tissues, such as the eye. Our pages on skin cancer and intraocular melanomahave more information.
There are different types of brain and spinal cord tumors. These tumors are named based on the type of cell in which they formed and where the tumor first formed in the central nervous system. For example, an astrocytic tumor begins in star-shaped brain cells called astrocytes, which help keep nerve cellshealthy. Brain tumors can be benign (not can...
Germ Cell Tumors
Germ cell tumors are a type of tumor that begins in the cells that give rise to sperm or eggs. These tumors can occur almost anywhere in the body and can be either benign or malignant. Our page of cancers by body location/systemincludes a list of germ cell tumors with links to more information.
Neuroendocrine Tumors
Neuroendocrine tumors form from cells that release hormones into the blood in response to a signal from the nervous system. These tumors, which may make higher-than-normal amounts of hormones, can cause many different symptoms. Neuroendocrine tumors may be benign or malignant. Our definition of neuroendocrine tumorshas more information.
Carcinoid Tumors
Carcinoid tumors are a type of neuroendocrine tumor. They are slow-growing tumors that are usually found in the gastrointestinal system (most often in the rectum and small intestine). Carcinoid tumors may spread to the liver or other sites in the body, and they may secrete substances such as serotonin or prostaglandins, causing carcinoid syndrome. Our page on gastrointestinal carcinoid tumorshas more information.
Cancer is a disease in which some of the body’s cells grow uncontrollably and spread to other parts of the body. Learn about the definition, causes, types, and treatments of cancer from the National Cancer Institute.
Cancerous means involving cancer or cancerous cells. Learn how to use this adjective in different contexts and see translations in other languages.
Learn the origin, usage, and synonyms of the word cancer, which can refer to a zodiac sign, a crab-shaped constellation, or a malignant tumor. Find out how to distinguish between cancer and cancerous, and see examples of both terms in sentences.
Jan 17, 2023 · Cancer is a group of diseases that occur when abnormal cells divide rapidly and spread. Learn the types, causes, treatments, and prevention methods.
Cancer is a disease of abnormal cell growth that can affect any part of the body. Learn about the types, causes, stages, and treatments of cancer from the American Cancer Society.
Dec 7, 2022 · 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.
