Cervical cancer is a slow-growing cancer that develops in the lining of the cervix, which is the lower, narrow part of the uterus that connects the uterus to the vagina. An estimated 12,200 women in the United States were diagnosed with cervical cancer in 2010 and 4,210 died from it during that year. Fifty-eight percent of those 12,100 women were between the ages of 45 and 74. The 5 year survival rate from 1999 to 2006 was 70 percent. New early screening tests and a new vaccine are contributing to improved outcomes for this form of cancer.
There are two main types of cervical cancer: squamous cell carcinoma and adenocarcinoma. Squamous cell carcinoma is the most common form, occurring in about 80 to 90 percent of all cases. It develops in the thin, flat cells, called squamous cells, that cover the surface of the endocervix, the portion of the cervix closest to the uterus. Adenocarcinoma is more common in younger women and forms in the gland cells within the endocervix.
Although scientists are not 100 percent sure on how cervical cancer develops, they have been able to identify a number of risk factors which can lead to the disease. The chief risk factor is associated with sexually transmitted viruses such as some types of the human papillomavirus, and human immunodeficiency virus (HIV). The bacterial based Chlamydia, also transmitted during sexual activity, is another risk factor for cancer of the cervix. Other factors which can lead to an increased risk of include: smoking, a diet low in fruits and vegetables, obesity, long-term use of oral contraceptives, and multiple pregnancies. A family history of cervical cancer is another high risk consideration. Continue reading ‘Cervical Cancer Causes, Symptoms and Treatment’ »
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