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Ectopic pregnancy in a caesarean scar: a case report
Richard J Persadie1, Anne Fortier, Richard G Stopps
1Department of Obstetrics and Gynecology, McMaster University, Hamilton, ON.
Summary
Ectopic pregnancy in a Caesarean scar is rare but serious. Local methotrexate injection effectively resolved a case where systemic therapy failed, preserving fertility.
Area of Science:
- Reproductive Medicine
- Gynecologic Surgery
- Maternal-Fetal Medicine
Background:
- Cesarean scar ectopic pregnancy is a rare but high-risk condition.
- Associated risks include uterine rupture and severe hemorrhage.
- Conservative management, such as methotrexate or potassium chloride injection, is preferred over surgery for fertility preservation.
Observation:
- A 36-year-old woman presented with a Cesarean scar ectopic pregnancy at 7 weeks' gestation.
- Elevated beta-human chorionic gonadotropin (Beta-hCG) levels were noted.
- Initial systemic methotrexate therapy was ineffective.
Findings:
- Local injection of methotrexate was administered following systemic therapy failure.
- The local methotrexate injection successfully resolved the ectopic pregnancy.
- This approach proved effective in managing the Cesarean scar pregnancy.
Implications:
- Local methotrexate injection offers an effective conservative treatment for Cesarean scar ectopic pregnancies.
- This method can be a viable alternative to surgical intervention.
- Successful management preserves fertility in women with this rare condition.

