Mehmet Tolga Kafadar1, Tuğba Çaviş2, Önder Sürgit3, Aslı Köktener4

1Clinic of General Surgery, Health Sciences University Mehmet Akif İnan Training and Research Hospital, Şanlıurfa, Turkey
2Clinic of Radiology, Atatürk Training and Research Hospital, Ankara, Turkey
3Clinic of General Surgery, Medicana International Ankara Hospital, Ankara, Turkey
4Clinic of Radiology, Ankara Umut Hospital, Ankara, Turkey


Endometriosis is defined as the growth of functional endometriotic gland and stroma outside the uterine cavity. Although it is common in women of reproductive age, extragenital endometriosis is considerably rare. Due to its frequent localization at the rectosigmoid junction in the gastrointestinal system, endometriosis may manifest with abdominal pain, constipation, and rectal bleeding. Gastrointestinal stromal tumor is the most common mesenchymal tumor of the gastrointestinal system and develops from the muscularis propria. Its extraluminal component is prominent. This study aimed to report a rare case of a 37-year-old patient who was operated with laparoscopic colon resection for a malignant-appearing submucosal mass with indistinct borders at the rectosigmoid junction that received the final diagnosis in histopathological examination. Endometriosis should be considered in the differential diagnosis of non-specific gastrointestinal symptoms in female subjects of reproductive age as the one reported here.

Keywords: Endometriosis, rectosigmoid, malignancy, laparoscopic resection

This study was presented at the 33th National Radiology Congress, 07-11 November 2012, Antalya, Turkey.
Cite this article as: Kafadar MT, Çaviş T, Sürgit Ö, Köktener A. Endometriosis of the rectosigmoid colon mimicking gastrointestinal stromal tumor. Turk J Surg 2020; 36 (4): 409-412.


Peer Review

Externally peer-reviewed.

Author Contributions

Concept - M.T.K., T.Ç., A.K.; Design - M.T.K., Ö.S., A.K.; Supervision - M.T.K., T.Ç., Ö.S.; Resource - M.T.K., T.Ç., A.K.; Materials - M.T.K., T.Ç., Ö.S.; Data Collection and/or Processing - M.T.K., A.K.; Analysis and/or Interpretation - M.T.K., A.K.; Literature Search - M.T.K., T.Ç.; Writing Manuscript - M.T.K., A.K.; Critical Reviews - M.T.K., Ö.S., A.K.

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.