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Case Reports in Obstetrics and Gynecology
Volume 2015 (2015), Article ID 685761, 6 pages
Case Report

Resection of Cesarean Scar Pregnancy at Six Weeks of Gestation with Laminaria Cervical Dilatation under Sonographic and Hysteroscopic Guidance

Department of Obstetrics and Gynecology, Kobe City Medical Center General Hospital, Minami-Machi 2-1-1, Chuo-Ward, Kobe 650-0047, Japan

Received 6 May 2015; Revised 1 August 2015; Accepted 31 August 2015

Academic Editor: Ching-Chung Liang

Copyright © 2015 Tatsuji Hoshino et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In cases of fetal heartbeat- (FHB-) positive cesarean scar pregnancy (CSP), the embryo and placenta grow rapidly week by week. We experienced an FHB-positive CSP case at 6 weeks of gestation and assessed the CSP in detail with transvaginal ultrasound and transabdominal ultrasound (TAUS), preoperatively. We performed Laminaria cervical dilatation under TAUS guidance and performed hysteroscopic resection of the pregnancy conceptus and curettage under hysteroscopic and TAUS guidance. We identified the gestational sac attached to the cesarean scar pouch with small plane, decidua basalis, and chorionic villi and present the clinical history and other findings. We also reviewed the related literature and found 76 previous studies, with six cases of FHB-positive CSP that contained hysteroscopic color images of the CSP. We present a review of selected cases. The implantation site was the anterior wall in almost all cases. Cervical dilatation was mainly performed using a Hegar dilator; ours was the only case using Laminaria dilatation. Transcervical resections were performed mainly under ultrasound guidance, with only one case undergoing laparoscopy. Electrocoagulation was performed in three of the six cases.