Uterine anomalies are mainly associated with improper development of Mullerian ducts. To our knowledge, reports describing the use of a da Vinci Robot System for treating an endometrial cancer in a woman with an abnormal uterus are lacking. Here, we reported the description of two extremely obese women, affected by endometrial cancer and presenting bicornuate-bicollis and didelphic uterus have been treated by Robot System-assisted surgery. No operative and postoperative complications were recorded. Both women are disease-free to follow-up. A robot-assisted surgery could represent an effective treatment option for complex hysterectomies and in complicated patients, as those showing an extreme obesity.