The hysteroscope is a thin tube-like medical instrument that can enter the uterine cavity through the cervical canal, inflate the uterine cavity with dilating fluid, and illuminate the cavity with a strong light, allowing clear observation of the size and shape of the uterine cavity (see attached image), the color and thickness of the endometrium, the presence of the uterine horns and the opening of the fallopian tubes, endometrial hyperplasia, endometritis, submucosal fibroids and endometrial polyps, and other occupying lesions. lesions such as uterine septum, uterine adhesions, and intrauterine foreign bodies. After the diagnosis is clear, hysteroscopic surgery is performed. Illustration Normal uterine cavity