Hatice Karaman1, Feridun Bulut2, Aysel Özaşlamacı3

1Clinic of Pathology, Kayseri Training and Research Hospital, Kayseri, Turkey
2Clinic of General Surgery, Kayseri Training and Research Hospital, Kayseri, Turkey
3Clinic of Radiology, Kayseri Training and Research Hospital, Kayseri, Turkey


The presence of endometrial glands and stroma outside the uterine cavity is called “endometriosis”. Recklinghausen first defined this entity in 1896, and Sampson first named it in detail in 1921. Endometriosis is most often seen in the pelvis. Although extrapelvic endometriosis is rare, it can be seen in almost every organ. Endometriosis localized in the rectus abdominis muscle is very rare. A patient who had two previous cesarean sections presented with a 23 mm heterogeneous hypoechoic mass within the rectus abdominis muscle, approximately 1 cm superior to the Pfannenstiel incision that was diagnosed as endometriosis externa by fine-needle biopsy and excisional biopsy. Herein, we report this patient along with the literature.

Keywords: Rectus abdominis, endometriosis externa, cesarean section scar


Peer Review

Externally peer-reviewed.

Author Contributions

Concept - H.K.; Design - H.K., Supervision - H.K., A.Ö.; Funding - H.K., F.B.; Materials - A.Ö.; Data Collection and/or Processing - H.K., A.Ö.; Analysis and/or Interpretation -H.K.; Literature Review - H.K., F.B.; Writer - H.K.; Critical Review - H.K., F.B., H.Ş.

Conflict of Interest

No conflict of interest was declared by the authors.

Financial Disclosure

The authors declared that this study has received no financial support.