Hysteroscopic surgery or hysteroscopy is a minimally invasive procedure for viewing the lining and interior of the uterus (womb). A flexible visualising scope is inserted through the vagina and into the cervical opening to view the uterus, including the openings to the fallopian tubes, as well as to examine the cervix, cervical canal and vagina. Hysteroscopy may be performed to diagnose or treat abnormalities of the uterus or cervix. It is used to evaluate a range of problems, including: abnormal vaginal bleeding; retained placenta after a birth; scarring, or adhesions, from previous uterine surgery or instrumentation; and polyps or fibroid tumours inside the cervical canal or the uterus. During hysteroscopy samples of tissue may be taken for analysis (biopsy). Hysteroscopy can also be used to perform surgical sterilisation.