At the Nepean Hospital transabdominal ultrasound has been used to assist the hysteroscopic surgeon when performing complicated transcervical operations. The 2 main areas of use appear to be either to direct the surgeon within the uterus to the site of pathology or to prevent inadvertent perforation of the uterine wall. The cases vary from haematometra following endometrial ablation to Asherman syndrome and subseptate uteri.