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Updated: Jan 29, 2026

Single Cell Collection of Trophoblast Cells in Peri-implantation Stage Human Embryos
Published on: June 12, 2020
Persistent omental trophoblastic implantation following salpingostomy, salpingectomy and methotrexate for ectopic
Danielle Robson1, Vanessa Lusink1, Neil Campbell1
1Royal Prince Alfred Hospital, Research Institute, Missenden Road, Camperdown, NSW, Australia.
Abstract:
2% of all pregnancies are ectopic. Optimal surgical management is currently salpingectomy over salpingostomy, secondary to the risks of persistent trophoblastic tissue or omental implants (15%). However, rare cases of omental trophoblastic implants following laparoscopic salpingectomy have been noted in the literature. Current practice dictates that serial determinations of human chorionic gonadotropin (beta-hCG) levels after salpingectomy are not required, as it is considered a definitive treatment. However, given that these cases are hard to interpret through ultrasound and are almost always detected via sudden-onset abdominal pain and acute haemoperitoneum (33%), an argument can be made for post-operative beta-hCG assessment.
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