Hysteroscopy is a clinical procedure that involves inserting an optical instrument (one lighted tube connected to a video camera and a TV screen) through the vulva and vagina to allow the specialist look inside the uterus. To carry out the hysteroscopy it is necessary to perform cervical dilation, which is usually done with a saline solution. This is a minimally invasive technique to diagnose intrauterine pathologies that could not be clearly determined with other medical tests, such as cancer or a polyp. Surgical hysteroscopy requires general or local anaesthesia and the patient returns home the same day after the surgery. The technique often produces no further complications.