Endometritis can be detected through an ultrasound, and it's best to inspect within three to seven days after the menstrual cycle has ended. Ultrasound is a tool that assists in diagnosing gynecological diseases, and it can be used to check for endometritis. However, to confirm the diagnosis, other methods such as laboratory tests, vaginal discharge exams, and internal scanning are needed. When treating endometritis, it's crucial to identify any underlying causes. For instance, if there are retained placental fragments after childbirth or a miscarriage, a curettage to remove the remnants is necessary. Furthermore, if the endometritis is caused by an intrauterine device, it should be removed; if caused by uterine polyps, these should be excised.