A sterile fluid is introduced into the uterus through a thin tube called a catheter. The fluid causes the uterus to expand, providing a clearer image of any growths within the uterine cavity during the ultrasound procedure. Hysteroscopy: this may be used to either diagnose or treat uterine polyps. During this procedure, a doctor inserts a long …
https://my.clevelandclinic.org/health/diseases/14683-uterine-polyps/diagnosis-and-tests

