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INTRODUCTION
Epithelial cancers of ovarian, fallopian tubal, and peritoneal origin in women exhibit similar clinical characteristics and behavior. As such, these are often combined and define epithelial ovarian cancer (EOC) in clinical trials and clinical practice. This topic will consider all three tumors under the heading EOC.
Despite initial therapy, the majority of women will relapse and require retreatment. Taking into account the frequency of each stage of disease and its projected relapse rate, the overall likelihood of relapse after initial therapy for all stages of disease for women with EOC is 62 percent; it is 80 to 85 percent for women who present with abdominal (stage III) or extra-abdominal (eg, liver or lung involvement, stage IV) disease.
The management of relapsed disease is stratified based upon the amount of time that has elapsed between the completion of platinum-based treatment and the detection of relapse, known as the platinum-free interval (PFI) (see "First-line chemotherapy for advanced (stage III or IV) epithelial ovarian, fallopian tubal, and peritoneal cancer", section on 'Treatment of recurrent disease'):
The initial diagnosis and management of EOC, the surgical treatment of recurrent EOC and an overview of angiogenesis inhibitors in EOC are covered separately. (See "Overview of epithelial carcinoma of the ovary, fallopian tube, and peritoneum" and "Surgery for recurrent epithelial ovarian cancer" and "First-line chemotherapy for advanced (stage III or IV) epithelial ovarian, fallopian tubal, and peritoneal cancer" and "The role of angiogenesis inhibitors in epithelial carcinoma of the ovary, fallopian tube, or peritoneum", section on 'Recurrent disease' and "Epithelial carcinoma of the ovary, fallopian tube, and peritoneum: Clinical features and diagnosis".)
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