When the uterus is prolapsed, ultrasound can be used to assess if it is a case of isolated uterine prolapse (Clip 1) or if there are other types of associated prolapse present. It can also differentiate whether the uterine prolapse is only at the expense of the cervix (cervical elongation) or whether it involves the entire uterus. This can influence the type of treatment. Ultrasound is also useful in the assessment of vaginal vault prolapse. Patients who have previously undergone a hysterectomy can sometimes have distorted anatomy, so where we expect to see the vaginal vault scar with the small bowel loops just behind it, we instead see (ultrasonographically) the bladder.