Hysteroscopy is a procedure that allows a doctor to look inside the uterus using a thin, lighted tube called a hysteroscope. This tube is gently inserted through the cervix (the opening to the uterus) so the doctor can see the inside of the uterine cavity on a screen. Hysteroscopy can be used to find the cause of problems such as heavy or irregular bleeding, infertility, or repeated miscarriages. It can also be used to treat certain issues, like removing small growths (polyps or fibroids) or scar tissue, without the need for large cuts or major surgery.