Sonohysterography is an ultrasound-guided technique designed to better image the uterine cavity. A small catheter is placed into the cervical canal and sterile saline is injected through the catheter into the uterine cavity. The saline distends the cavity, allowing for more accurate assessment of abnormalities of the uterus and endometrium.
Sonohysterography is recommended to further investigate:
- Postmenopausal bleeding
- A possible mass within the uterine cavity, eg., a polyp, fibroid or diffuse endometrial thickening
- Infertility and recurrent miscarriage
- Endometrial thickening in patients on Tamoxifen therapy for breast cancer
There can be mild discomfort associated with this procedure, particularly if the tubes are blocked. A simple analgesic such as Nurofen (2 tablets) taken half an hour before the procedure is recommended.
The procedure should not be performed during pregnancy, and is ideally performed at the completion of a period, on approximately day 10 of the menstrual cycle. This ensures that the procedure does not interfere with implantation of an embryo.