Outpatient clinics often encounter such patients: A 36-year-old married woman with a son and dull pain in her lower abdomen for two days showed a small amount of uterine effusion by B-ultrasound. 66-year-old female, menopause for more than 10 years, vaginal bleeding and watery secretion for 3 days, no abdominal pain, ultrasound showed echo of IUD at cervical internal orifice, moderate effusion in uterine cavity; A 25-year-old woman, 52 days after assisted reproductive embryo transfer, had no vaginal bleeding and color Doppler ultrasound showed a small amount of effusion in the uterine cavity. The [uterine cavity effusion] on the ultrasound list makes many female compatriots sad and toss and turn at night, including adolescent girls with painful expressions and unbearable Read More …