differential diagnosis of ectopic pregnancy: tubal pregnancy miscarriage acute tubal infection acute appendicitis rupture of the corpus luteum ovarian cystti torsion, pelvic examination when lifting the cervix on one side of the lower abdomen uterine opening slightly open lifting the cervix on both sides no mass palpable no mass palpable cervical lifting pain, ovarian pain, parametrial or rectal uterus enlargement softening lower abdominal pain, only rectal finger examination on the right side of the adnexal pressure pain mass clear margins, ti uterine sink with mass fallopian tube fluid accumulation when high pressure pain department tenderness is obvious, touching the mass, white blood cell count normal or slightly elevated normal elevated normal or slightly elevated slightly elevated, hemoglobin decreased normal normal normal normal decreased normal, posterior fornix puncture can be drawn non-coagulable blood negative can be drawn exudate negative can be drawn bloody fluid negative or pus, ultrasonography one side of the adnexal area intrauterine visible pregnancy sac on both sides of the adnexal hypoechoic area uterine adnexal area one side of the adnexal area low side Annex hypoechoic hypoechoic area, there is no abnormal echogenic area within it, the edges are clear, or there is a gestational sac with striated tissues.