As a diagnostic procedure, the hysterosonogram is equal to the hysteroscopy procedure in identifying polyps or fibroids in the uterine cavity. It is performed in the doctor's office or in a hospital radiology department and does not require anesthesia. Ibuprofen is sometimes taken prior to the procedure to decrease the incidence of cramping. A small tube with a tiny balloon is placed into the cervix. Under vaginal ultrasound visualization, a small amount of sterile saline solution is placed into the uterine cavity. If there are any polyps or fibroids in the cavity, they can be easily seen by a doctor, who can then perform a hysteroscopy to remove the lesion(s).