What is Ovarian cancer?
'''Ovarian cancer''' is [[cancer]] that involves different regions of the [[ovary]]. (The female reproductive system usually contains two [[ovaries]], one on each side of the [[uterus]].) Changes that happen in the [[Fallopian tube|Fallopian tube(s)]] may be related to the cancer. (The female reproductive system usually contains two fallopian tubes, one for each ovary.) Other types of ovarian cancer involve [[egg cell]]s. {{Infobox medical condition (new) | name = Ovarian cancer | image = mucinous_lmp_ovarian_tumour_intermed_mag.jpg | caption = [[Micrograph]] of a mucinous ovarian carcinoma [[H&E stain|stained by H&E]] | field = [[Oncology]], [[gynecology]] | symptoms = '''Early''': vague<ref name=NCI2014TxPt/><br />'''Later''': [[bloating]], [[pelvic pain]], [[constipation]], abdominal swelling, loss of appetite<ref name=NCI2014TxPt/> | complications = | onset = Usual age of diagnosis 63 years old<ref name=NCI2016Onset/> | duration = | types = * Ovarian origin: [[sex-cord stromal tumor]], [[germ cell tumor]]<ref name=Zil2021/> * Non-ovarian origin: most epithelial ovarian cancers and epithelial–stromal ovarian tumors<ref name=Zil2021/> | causes = | risks = [[Nulliparity|Never having children]], [[hormone therapy]] after [[menopause]], [[fertility medication]], [[obesity]], genetics<ref name=NCI2014PrePt/><ref name=WCR2014/><ref name=NCI2014PrePro/> | diagnosis = [[Tissue biopsy]]<ref name=NCI2014TxPt/> | differential = | prevention = | treatment = Surgery, [[radiation therapy]], [[chemotherapy]]<ref name=NCI2014TxPt/> | medication = | prognosis = [[Five-year survival rate]] c. 49% (US)<ref name=SEER2014/> | frequency = 1.2 million (2015)<!-- prevalence --><ref name=GBD2015Pre>{{cite journal | vauthors = ((GBD 2015 Disease and Injury Incidence and Prevalence Collaborators)) | title = Global, regional, and national incidence, prevalence, and years lived with disability for 310 diseases and injuries, 1990-2015: a