Cancer

Patients who smoke want respect from physicians

What is it like to be someone who smokes in today's increasingly smoke-free world? How can providers best interact with their patients who smoke and support their efforts to become tobacco-free? A new study by researchers ...

17 minutes ago
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Make your diet anti-inflammatory with a few easy changes

Use your search engine or explore a local bookstore, and you'll find a wide variety of anti-inflammatory diet books. This eating approach is promoted to reduce everything from heart disease to asthma, and often requires you ...

28 minutes ago
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Genetic modification aids cancer drug discovery

Genetically modifying cancer cells can aid in clarifying new cancer drugs' mechanism of action, according to a new study by researchers at KU Leuven's Laboratory of Virology and Chemotherapy (Rega Institute).

39 minutes ago
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How much overdetection is acceptable in cancer screening?

People have highly variable views on how much overdetection is acceptable in cancer screening, finds a UK survey in The BMJ this week. The authors say invitations for screening "should include clear information on the li ...

13 hours ago
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Cancer /ˈkænsər/ ( listen), known medically as a malignant neoplasm, is a broad group of various diseases, all involving unregulated cell growth. In cancer, cells divide and grow uncontrollably, forming malignant tumors, and invade nearby parts of the body. The cancer may also spread to more distant parts of the body through the lymphatic system or bloodstream. Not all tumors are cancerous. Benign tumors do not grow uncontrollably, do not invade neighboring tissues, and do not spread throughout the body.

Determining what causes cancer is complex. Many things are known to increase the risk of cancer, including tobacco use, certain infections, radiation, lack of physical activity, poor diet and obesity, and environmental pollutants. These can directly damage genes or combine with existing genetic faults within cells to cause the disease. Approximately five to ten percent of cancers are entirely hereditary.

Cancer can be detected in a number of ways, including the presence of certain signs and symptoms, screening tests, or medical imaging. Once a possible cancer is detected it is diagnosed by microscopic examination of a tissue sample. Cancer is usually treated with chemotherapy, radiation therapy and surgery. The chances of surviving the disease vary greatly by the type and location of the cancer and the extent of disease at the start of treatment. While cancer can affect people of all ages, and a few types of cancer are more common in children, the risk of developing cancer generally increases with age. In 2007, cancer caused about 13% of all human deaths worldwide (7.9 million). Rates are rising as more people live to an old age and as mass lifestyle changes occur in the developing world.

This text uses material from Wikipedia licensed under CC BY-SA

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