Minimally Invasive Interval Debulking Surgery in Advanced Ovarian Cancer

Inclusion Criteria: * Stage IIIC or IV high-grade invasive epithelial ovarian carcinoma (serous, endometrioid, clear cell, transitional), primary peritoneal carcinoma, or fallopian tube carcinoma, or pathology consistent with high-grade Müllerian carcinoma. * Partial or complete radiological response of abdominal cavity disease after at least 6 cycles of neoadjuvant chemotherapy (NACT). * CA125 \< 100 U/mL. * ECOG performance status 0-1. * Signed informed consent and ability to comply with follow-up, including in cases where the patient has a legal guardian. In such cases, consent will be provided by the legal guardian. * Review of imaging by a radiologist and senior surgeon at a multidisciplinary tumor board, particularly evaluating hepatic hilum involvement, mesenteric root, extensive peritoneal disease in the upper abdomen, extensive hepatic or gastric involvement, and extensive intestinal involvement. * If all the previous criteria are met and protocol acceptance is obtained, the patient will undergo a laparoscopic evaluation of all abdominal quadrants to confirm the feasibility of minimally invasive surgery (MIS). Surgery will be considered feasible if complete gross resection can be achieved with minimally invasive surgery. If minimally invasive surgery is not feasible, the patient will be excluded from the study, and the reason for unfeasibility will be described. Exclusion Criteria: * Evidence of a tumor not amenable to minimally invasive complete resection on preo…