The purpose of this study is to determine the role of surgery followed by hyperthermic intra-peritoneal chemotherapy (HIPEC) versus surgery alone in patients with platinum-sensitive first recurrence of ovarian cancer. Moreover it is a prospective randomized multicenter trial, aimed to investigate the prognostic role of surgery plus HIPEC versus surgery alone in terms of progression free interval, overall survival, morbidity and mortality, second recurrence pattern, quality of life with EORTC QLQ-C30 and QLQ OV28 questionnaires.
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Inclusion Criteria: * Age over 18 and under 70 years * Patients affected by a first recurrence of ovarian cancer with measurable lesions or not, but evaluable (upwards of Ca125 for 2 consecutive assessments). * ECOG-performance status ≤ 2 * Ovarian cancer limited to the abdominal cavity with or without extraperitoneal spread considered resectable at intraoperative evaluation * Evidence of tumor recurrence diagnosed after 6 months from primary treatment * Previous-based chemotherapy of carboplatin and taxanes * Positive Peritoneal Washing in the presence of other abdominal disease surgically resectable * Adequate respiratory, hepatic, cardiac, kidney and bone marrow function (absolute neutrophil count \> 1500/mm3, platelets \> 150,000/μl, creatinine clearance \> 60 mL/min according to Cockroft formula) * Patient-compliant and psychologically able to follow the trial procedures Exclusion Criteria: * Non-epithelial ovarian cancer or borderline ovarian tumor * Pregnancy or breastfeeding * Patients affected by major depressive disorder even in treatment or minor mood disorders * Patients with severe impairment of respiratory, hepatic or renal function * Patients with cardiac, neurological or metabolic uncontrolled pharmacologically disease * Patients with active infection or other neoplastic disease in progress * Patients with bowel obstruction * Inadequate bone marrow, liver, kidney function * No clear-peritoneal disease at surgical exploration * Patients with ascites \> 500 ml (the TAC) * Patients on maintenance therapy with Antiangiogenic drugs * Patients with secondary or tertiary recurrence, or already submitted to HIPEC * Patients who have already made the second or third line chemotherapy.