Case presentation: A 47-year-old woman presented to the ED with right-sided and central abdominal pain . Ten years earlier, she had undergone a hysterectomy for menorrhagia and hormone replacement therapy (HRT) with an oestradiol patch. Physical examination: Localized peritonism along the right and upper central abdomen were tender to touch. Exploratory laparoscopy: A firm, irregular omental mass was found above the proximal transverse colon, near the hepatic flexure. The lesion appeared to extend from the colon.
The appendix was normal. A biopsy was performed on the partly necrotic omental nodule adjacent to the larger eccentric mass. Radiological findings: Chest, abdomen, and pelvis CT scans showed a 28 X 15 mm ovoid mass that originated from the transverse colon without evidence for nodal disease or distant metastasis (Cover image A). Colonoscopy revealed no signs of primary or…
