|
Uterine cancer or womb cancer is any type of cancer that emerges from the tissue of the uterus. It can refer to several types of cancer, with cervical cancer (arising from the lower portion of the uterus) being the most common type worldwide and the second most common cancer in women in developing countries. Endometrial cancer (or cancer of the inner lining of the uterus) is the second most common type, and fourth most common cancer in women from developed countries.〔 Risk factors depend on specific type, but obesity, older age, and human papillomavirus infection add the greatest risk of developing uterine cancer. Early on, there may be no symptoms, but irregular vaginal bleeding, pelvic pain or fullness may develop.〔〔 If caught early, most types of uterine cancer can be cured using surgical or medical methods. When the cancer has extended beyond the uterine tissue, more advanced treatments including combinations of chemotherapy, radiation therapy, or surgery may be required.〔〔 == Types == The terms uterine cancer and womb cancer may refer to any of several different types of cancer which occur in the uterus, namely: *Endometrial cancer: : *''Endometrial carcinomas'' originate from cells in the glands of the endometrium (uterine lining). These include the common and readily treatable ''well-differentiated endometrioid adenocarcinoma,'' as well as the more aggressive ''uterine papillary serous carcinoma'' and ''uterine clear-cell carcinoma''. : *''Endometrial stromal sarcomas'' originate from the connective tissues of the endometrium, and are far less common than endometrial carcinomas. : *''Malignant mixed Müllerian tumors'' are rare endometrial tumors which show both glandular (carcinomatous) and stromal (sarcomatous) differentiation – carcinosarcoma behaves similar to a high grade carcinoma, and it is felt to be of epithelial origin rather than true sarcoma. *Cervical cancer arises from the transformation zone of the cervix, the lower portion of the uterus and connects to the upper aspect of the vagina. *Uterine sarcomas: sarcomas of the myometrium, or muscular layer of the uterus, are most commonly leiomyosarcomas. *Gestational trophoblastic disease relates to neoplastic processes originating from tissue of a pregnancy that often is located in the uterus. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Uterine cancer」の詳細全文を読む スポンサード リンク
|