Inclusion Criteria:  Age ≥18 years  Presence of a ovarian tumor and referred to specialized center for surgery based on:  Any ultrasound model e.g. RMI-scoring model ; IOTA-rules Subjective assessment of the referring gynecologist Normal Glomerular Filtration Rate (GFR): >60ml/min/1,73m2 General criteria: a. Understanding of Dutch language b. Fit for surgery (WHO 1-2) c. Written informed consent  Exclusion Criteria:  Suspicion of advanced-stage of disease, e.g. ascites or peritoneal depositions History of cancer (excl. BCC) within 5 years prior to inclusion Multiple malignancies at the same time