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Cervical cancer is a cancer arising from the cervix or in any layer of the wall of the cervix. [2] It is due to the abnormal growth of cells that can invade or spread to other parts of the body. [12] Early on, typically no symptoms are seen. [2] Later symptoms may include abnormal vaginal bleeding, pelvic pain or pain during sexual intercourse. [2]
It resembles small-cell cancer of the lungs and accounts for less than 3% of all cervical cancers. Like small-cell cancer in the lungs, the lymph nodes play a major role in spreading the cancer throughout the body. SCC begins in the inner part of the cervix and is very hard to diagnose.
This disease can progress to invasive cancer (squamous cell carcinoma) of the cervix. Cervical squamous intraepithelial lesion (SIL), previously called cervical intraepithelial neoplasia (CIN), is a form of dysplasia that can progress to cervical cancer. The term carcinoma in situ may be used interchangeably with high-grade SIL. [8]
After years of decline, cervical cancer rates are rising in some demographics in the United States — primarily low-income women and those in their 30s and 40s. If the disease spreads in the body ...
The cause of CIN is chronic infection of the cervix with HPV, especially infection with high-risk HPV types 16 or 18. It is thought that the high-risk HPV infections have the ability to inactivate tumor suppressor genes such as the p53 gene and the RB gene, thus allowing the infected cells to grow unchecked and accumulate successive mutations, eventually leading to cancer.
Cervical cancer was the most frequent HPV-associated cancer with on average 292 cases per year (74% of the female total, and 54% of the overall total of HPV-associated cancers). [197] A study of 996 cervical cytology samples in an Irish urban female, opportunistically screened population, found an overall HPV prevalence of 19.8%, HPV 16 at 20% ...
Cervical cancer is a type of gynecological cancer that begins from cells lining the cervix, the lower part of the uterus. [14] Cervical cancer begins when the cells that line the cervix become abnormal and grow in a pattern that is atypical for non-cancerous cells. [14] Cervical cancer is typically first identified with an abnormal pap smear. [14]
The Pap smear, on the other hand, looks for abnormal changes to cervical cells caused by HPV "that may — if left untreated — turn into cervical cancer," according to the NCI. “It can also ...