Methotrexate therapy for persistent ectopic pregnancy after conservative laparoscopic management. Persistent ectopic pregnancy is a recognized complication of conservative laparoscopic surgery. Three such cases were treated successfully with methotrexate and citrovorum factor rescue. All three patients experienced mild lower abdominal pain for a maximum of 36 hours; no other adverse effects were noted. More experience with this therapy will be necessary before subsequent fertility rates can be determined. 