Cancer
Cancer is the catchall term applied to diseases caused by the uncontrolled growth of abnormal cells. Cancer isn't one disease. It is many different diseases, more than 100 and counting.
Each kind of cancer is usually named for the cell type in which it begins — cancer that starts in a lung is called lung cancer; cancer that starts in pigment cells in the skin, which are known as melanocytes, is called melanoma.
When detected and treated early, cancer can often be stopped. That said, cancer is a leading cause of death and disability around the world.
Cancer Articles
Just a four-week delay in cancer treatment is associated with a 6% to 8% increase in the risk of death, according to a review of 34 studies published online Nov. 4, 2020, by The BMJ.
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Study results looking at a link between certain drugs, supplements or dietary approaches and a lower risk of colon cancer are mixed. However, some studies do suggest an association between NSAID use and high intake of fruits, vegetables and fiber with lower colon cancer rates.
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People with a history of periodontal (gum) disease were 43% more likely to develop esophageal cancer and 52% more likely to develop gastric (stomach) cancer, according to a study published online July 20, 2020, by the journal Gut.
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People who move more during the day may be at a much lower risk of dying from cancer compared with more sedentary individuals. Experts recommend getting at least 30 minutes of daily activity to counter the effects from sitting.
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A study conducted by Harvard researchers, outlined in a letter published in July 2020 in the journal Gut, found that people with a history of gum disease also have a higher risk of stomach and esophageal cancers.
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Squamous cell carcinoma of the lung is a type of lung cancer. It occurs when abnormal lung cells multiply out of control and form a tumor. Eventually, tumor cells can spread (metastasize) to other parts of the body including the
In general, there are two categories of lung cancer: small cell lung cancer and non-small cell lung cancer. The cancer cells in each type look different under the microscope. They are also treated differently. The prognosis for non-small cell lung cancer tends to be better than for small cell lung cancer; non-small cell lung cancers are more likely to be contained in one area, making treatment more likely to be successful.
Squamous cell carcinoma is one type of non-small cell lung cancer. The others are
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Throat cancer occurs when cells in the organs used for breathing, speaking, and swallowing begin to divide rapidly and abnormally. Most throat cancer begins on the vocal cords. Later, it spreads to the voice box (larynx); to the back of the throat, including part of the tongue and the tonsils (this whole area is called the pharynx); or below the voice box to the subglottis and trachea (windpipe). An early symptom of throat cancer is unexplained hoarseness or a raspy voice.
Smokers are at high risk of throat cancer. Other people at risk include those who drink a lot of alcohol, especially if they also smoke. People with a vitamin A deficiency and certain types of human papillomavirus (HPV) infection also may be more likely to develop throat cancer.
Throat cancer is associated with other cancers. Fifteen percent of throat cancer patients also are diagnosed at the same time with cancer of the mouth, esophagus or lung. Another 10% to 20% of people with throat cancer develop these other cancers later on.
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Uterine cancer is the most common cancer of the female reproductive tract. There are two main types: endometrial cancer and uterine sarcoma.
Endometrial cancer is the most common type of uterine cancer. It occurs in the inner lining of the uterus, called the endometrium. The disease generally strikes women between the ages of 50 and 65. Its cause is not fully understood.
However, women who have high levels of the hormone estrogen that are not offset by the hormone progesterone are more likely to develop endometrial cancer. Since progesterone levels drop after menopause, postmenopausal women have a higher-than-normal risk of developing this cancer. Other women likely to have high levels of estrogen without enough progesterone include those who
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Vaginal cancer is the uncontrolled growth of abnormal cells in the vagina (birth canal).
Cancer that starts in the vagina is called primary vaginal cancer. Primary vaginal cancer is rare. More commonly, cancer cells in the vagina are from cancer that started somewhere else, such as the cervix. There are two main types of primary vaginal cancer: squamous cell carcinoma and adenocarcinoma.
The vast majority of vaginal cancers are squamous cell carcinomas. These cancers arise from the surface of the lining of the vagina. They usually develop slowly, most often in the upper part of the vagina near the cervix. This type of cancer typically affects women between 50 and 70 years old.
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The American Cancer Society says Americans should get more exercise than the previously recommended 150 minutes of moderate exercise each week and skip alcohol entirely to reduce their risk of cancer.
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