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Order of changes in ovary. 1 - Menstruation 2 - Developing follicle 3 - Mature follicle 4 - Ovulation 5 - Corpus luteum 6 - Deterioration of corpus luteum. In biology, folliculogenesis is the maturation of the ovarian follicle, a densely packed shell of somatic cells that contains an immature oocyte.
Serous ovarian cancer is the most common type of epithelial ovarian cancer and it accounts for about two-thirds of cases of epithelial ovarian cancer. [28] Low-grade serous carcinoma is less aggressive than high-grade serous carcinomas, though it does not typically respond well to chemotherapy or hormonal treatments. [ 28 ]
Ovarian tumors, or ovarian neoplasms, are tumors in the ovary. [1] Not all are ovarian cancer. [1] They consist of mainly solid tissue, while ovarian cysts contain fluid. [2]In 2020, the World Health Organization (WHO) divided ovarian tumours as 90% epithelial, 3% germ cell, and 2% sex cord-stromal types.
OGCT is a rare tumour under the scope of ovarian cancer, accounting for less than 5% of all ovarian malignancies. It occurs mostly in 15-19-year-old women and shows 75% incidence rate for women aged <30 years. [25] In 2011, the number of new cases occurred worldwide is 5.3 per million. [26]
As ovarian cancer is rarely symptomatic until an advanced stage, [42] regular pre-emptive screening is a particularly important tool for avoiding the late stage at which most patients present. However, A 2011 US study found that transvaginal ultrasound and cancer marker CA125 screening did not reduce ovarian cancer mortality. [43]
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