Early Abdominal Ectopic Pregnancy Masquerading as a Missed Miscarriage

Joy Qing En Wong, Yu Hui Lim


A 43-year-old lady, gravida 2 para 0, presented to our emergency department with complaints of vaginal bleeding and lower abdominal pain. Her urine pregnancy test was positive. She was unable to recall her last menstrual period. A trans-vaginal ultrasound revealed a pregnancy with a crown rump length of 47 mm corresponding to 11.4 weeks with no fetal heartbeat detected. She was diagnosed with a missed miscarriage and was sent for a second confirmatory scan. The repeat scan was concordant with the initial scan and she was counseled for an evacuation of uterus. Her serum beta human chorionic gonadotropin level was 45,195 IU/L and her hemoglobin level was 6.5 g/dL. She underwent an evacuation of uterus as planned, but the Hegar dilator was only able to be advanced to a cavity length of 6 cm with minimal products of conception obtained. A bedside ultrasound was performed and it showed that the Hegar dilator was in the uterine cavity but not in continuity with the gestational sac and fetus. The diagnosis of an ectopic pregnancy was made and the surgery was converted to a diagnostic laparoscopy. On entry into the abdominal cavity, there was frank hemoperitoneum with adhesions limiting access to the pelvis, therefore decision was made to convert to laparotomy. The findings at laparotomy revealed a large inflamed left tubo-ovarian complex with tubal rupture and expulsion of the entire fetus and placenta into the Pouch of Douglas (POD). The diagnosis of a secondary implantation of the ectopic pregnancy in the POD after tubal rupture was confirmed and we performed adhesiolysis and left salpingectomy. The patient recovered uneventfully and the final histology showed products of conception within the lumen of the left fallopian tube in keeping with ruptured tubal ectopic pregnancy.

J Med Cases. 2020;11(6):169-173
doi: https://doi.org/10.14740/jmc3484


Abdominal pregnancy; Ectopic pregnancy; Missed miscarriage

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