Evaluation of Sentinel Node Policy in Early Stage Endometrial Carcinomas at Intermediate and High Risk of Recurrence.

1. Routine exams required for diagnosis: * Endometrioid biopsy or product of a dilatation-curettage under hysteroscopy for diagnosis of histologic typing * Tumor assessment: Lombopelvic MRI (1.5 or 3T) with gadolinium injection, studied by steady and dynamic sequences. US and CT-Scan in case of intolerance to MRI should be discussed. FDG-PET may be an option. 2. Tumor board: The completed chart will be reviewed to confirm the risk group and indication. 3. Complete physical and gynecological examination by surgical oncologist followed by a consultation of anesthesiology to confirm the operability of patient. 4. Informed and signed consent form. 5. Study baseline assessment. Then, 6. Surgery should be performed within a maximum of 4 weeks from the first consultation, according arm allocated: Arm A: Sentinel node policy\* Arm B: * Bilateral pelvic lymphadenectomy (intermediate risk endometrioid) * Or Ilio-infrarenal paraaortic lymphadenectomy (high risk endometrioid) * Or Pelvic + paraaortic lymphadenectomies (high risk non endometrioid)\* * along with a peritoneal staging for each arm (cytology, random biopsies, infracolic omentectomy) 7. Second tumor board: after definitive pathological results of the hysterectomy-annexectomy and node (sentinel or not) specimens.