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Peritoneal trophoblastic implants after surgical management of tubal pregnancy.

Persistent trophoblast after salpingostomy occurs in up to 7% of cases of tubal pregnancy. Usually the retained trophoblast is within the fallopian tube, but recent reports have described viable implants on the serosal and omental surfaces. A survey was mailed to 100 members of the American Association of Gynecologic Laparoscopists to determine the incidence of the complication. The 25 respondents reported 14 cases of persistent trophoblast implanted on the pelvic serosal or omental surface. This complication followed 1.9% of the cases managed with laparoscopy and 0.6% managed with laparotomy. Some surgical steps can decrease the likelihood of this complication. Also, the beta-human chorionic gonadotropin level should be monitored postoperatively, even if management was with salpingectomy, and especially if the specimen was fragmented laparoscopically to facilitate its removal.