Objective: To assess, in women with a wish for immediate future pregnancy and RPOC after non-surgical management of a miscarriage, as diagnosed with sonography, the effects of operative hysteroscopy versus expectant management. Study design: Multicenter randomized clinical trial. Study population: Patients after non-surgical management of a miscarriage with sonographic evidence of RPOC at the follow-up visit 6 weeks after initial treatment and wish for immediate (within 6 months) future pregnancy. Intervention: operative hysteroscopy versus expectant management. Main study parameters/endpoints: The primary outcome is time to next pregnancy, as substantiated by a positive urinary or serum hCG test. Secondary outcomes are Quality of Life (QOL) scores assessed with the SF-36, HADS and EQ-5D-5L, the need for additional and/or unscheduled treatments and/or visits and complications. Furthermore, data on the course of pregnancy - including miscarriage, ectopic pregnancy and live birth - are documented in those women who have an ongoing pregnancy after randomization during the study follow up period. In addition, iMTA PCQ questionnaires and health-costs are measured in all patients to perform a cost-effectiveness analysis. A total of 244 (122 per arm) women will be sufficient to answer the questions on the primary endpoint. Nature and extent of the burden and risks associated with participation, benefit and group relatedness: Women participating in the study will be asked to fill out questionnaires at baseline, 8 weeks and 6 months after randomization. We don not expect specific risks as a result of either the intervention or expectant management.