Intraoperative Finding of a Patient with Uterine Fibroid

INTRODUCTION: Most neoplasms in the pelvic cavity of women arise from organs of the reproductive system. However, diseases of the gastrointestinal and urinary tracts and neoplasms of a neurogenic and primary extraperitoneal nature can be also encountered in the pelvis where they may be mistaken as gynecological pathology. Thus, in an intraoperative discovery of previously undiagnosed foci of tumor lesions the surgical approach has to be changed, which can negatively affect the results of surgical treatment. Gastrointestinal stromal tumors (GISTs) refer to the most common tumors of the gastrointestinal tract originating from the mesenchymal anlage. Up to 70% of GISTs are located in the stomach, 20%–40% in the duodenum and small intestine, 5%–15% in the colon, and 2%–5% in the esophagus, with single tumors occurring in the appendix. CONCLUSION: The article presents a clinical case of a patient who underwent hysterectomy for multiple uterine fibroids and in whom a large GIST of the sigmoid colon was found intraoperatively that was previously mistaken as one of the subserous nodes of uterine fibroids.