Conclusion
RPOC in late pregnancy can cause heavy bleeding and infection, but these events do not occur after 60 days postpartum, and spontaneous resolution of RPOC is possible. A limitation of this study is that it was a retrospective study with a small number of cases. A multicentre prospective study is necessary to establish a standard treatment strategy that includes conservative management of RPOC.
Acknowledgement: We thank the women who participated in this study.
Disclosure of Interests: The authors declare no conflict of interest.
Contribution to Authorship: Conceptualization, R.F., K.K. and N.M.; methodology, R.M., K.K. and N.M.; validation, R.F., K.K. and N.M.; formal analysis, R.F., K.K. and N.M.; investigation, R.F., K.K.; data curation, R.F., K.K; writing—original draft preparation, R.F.; writing—review and editing, R.F., K.K., K.M., R.S., Y.Y. and N.M.; visualization, R.F.; supervision, N.M.; project administration, N.M. All authors have read and agreed to the published version of the manuscript.
Ethics Approval: The study was conducted in accordance with the Declaration of Helsinki, and approved by the Institutional Review Board of Kindai University (protocol code R04-166).
Funding: This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology, Japan (No. 21K16813).
Informed Consent Statement: Opt-out consent was obtained from all subjects involved in the study.
Data Availability Statement: The data that support the findings of this study are available from the corresponding author.