Hysterosonography, or saline infusion sonography (SIS), is a type of ultrasound examination done to examine the interior of the uterus. During the procedure, a thin catheter is passed through the cervix into the uterus and a sterile saline solution is infused to distend the uterine cavity. It enhances the clarity of the ultrasound view, facilitating the detection of uterine abnormalit... https://healthcheckbox.com/gynecology/hysterosonography/