To compare the effectiveness of vaginal dinoprostone and vaginal misoprostol with placebo in minimizing the pain experienced by postmenopausal patients during diagnostic office hysteroscopy and to assess the ease of insertion of hysteroscope as reported by the hysteroscopist.

hysteroscopy is commonly used in the diagnosis and treatment of intrauterine lesions such as polyps, fibroids, septa, and adhesions, and in the presence of abnormal bleeding and during the removal of an intrauterine device or foreign body. Cervical ripening is made possible by the use of medication through different routes. The most commonly used agent is misoprostol, a synthetic prostaglandin E1 (PGE1) analog that is frequently administered in off-label use in obstetrics and gynecology for medical abortion, labor induction, endometrial biopsy, dilatation and curettage, intrauterine device insertion, myomectomy, postpartum hemorrhage, and cervical ripening. In contrast, dinoprostone, a natural PGE2, is mostly used in obstetrics for cervical ripening and the stimulation of uterine contractions to induce labor.

Inclusion Criteria:

• Menopausal patients with an indication for office hysteroscopy (postmenopausal bleeding or abnormal ultrasound findings)

Exclusion Criteria:

• Nulliparous patients
• patients with cervical pathology
• retroverted uterus (detected by transvaginal ultrasound)
• previous cervical surgery
• patients with severe vaginal bleeding
• allergy or contraindications to dinoprostone or misoprostol therapy (asthma, liver, kidney, or heart disease).