1病例报告患者20岁,未婚,有性生活史,因停经43天,下腹胀痛2天于2002年12月1日入院。末次月经:2002年10月18日,平时月经周期37~38天。停经后无早孕反应,入院前4天曾有少许阴道流血,半天后自行停止,2天前突然出现下腹痛,以右侧为重。院外B超检查提示:右附件占位,盆腔积液。尿HCG? A case report 20-year-old patient, unmarried, with a history of sexual life, because of menopause 43 days, abdominal pain two days in December 1, 2002 admission. Last menstruation: October 18, 2002, usually menstrual cycle 37 to 38 days. No premenstrual reaction after menopause, 4 days prior to admission had a little vaginal bleeding, stop after half a day, 2 days ago, abdominal pain suddenly appeared to the right as the most important. B-ultrasound examination outside the hospital: right attachment occupies the pelvic fluid. Urine HCG?