I. Indications for hysteroscopy.
1, abnormal uterine bleeding, abnormal menstruation (less, more, amenorrhea).
2, submucosal myoma or endometrial polyp.
3, abnormal intrauterine device.
4, Infertility.
5, Abnormal uterine echogenicity and/or occupying lesions on ultrasound.
6.Uterine cavity malformation.
7.Recurrent spontaneous abortion.
8.Dysmenorrhea.
9.Follow-up after intrauterine surgery.
10.Cervical polyps.
11.Pre-IVF preparation.
12.Post-operative tamoxifen use for breast cancer.
II. Relative contraindications to hysteroscopy.
1.Vaginal and pelvic infections.
2.Multiple uterine bleeding.
3.Pregnancy.
4.Recent uterine perforation.
5. Excessively small uterine cavity or hard cervix, difficult to dilate.
6.Infiltrating cervical cancer.
7.Severe medical disorders that make it difficult to tolerate the operation of uterine dilatation.
8.Tuberculosis of the reproductive tract without anti-TB treatment.
9.Hematological disease without follow-up treatment.