Ileo-jejunal gastrointestinal stromal tumor (GIST) mimicking an ovarian mass

• Published in: International journal of gynecological cancer Vol. 33; no. 2; pp. 314 - 315
• Main Authors: Modi, Rahul D, Godara, Punam
• Format: Journal Article
• Language: English
• Published: England BMJ Publishing Group Ltd 01.02.2023; BMJ Publishing Group LTD
• Subjects: Abdomen; Antigens; Female; Gastrointestinal cancer; Gastrointestinal Stromal Tumors - diagnosis; Gastrointestinal Stromal Tumors - pathology; Gastrointestinal Stromal Tumors - surgery; Humans; Ovarian Cysts; Ovarian Neoplasms - diagnosis; Ovarian Neoplasms - pathology; Ovarian Neoplasms - surgery; Tomography; Ovarian Cysts
• DOI: 10.1136/ijgc-2022-003915
• ISSN: 1048-891X

A 71-year-old female presented with right pelvic mass and abdominal pain. The mass reached the epigastrium. It was mobile on abdominal examination with no signs of free fluid and same mobility was felt through the right fornix in the pouch of Douglas on vaginal examination. Serum CA-125 was 117 U/mL with normal carcinoembryonic antigen (CEA) and cancer antigen 19-9 (CA 19-9) levels. Computed tomography (CT) scan of the abdomen/pelvis showed a right adnexal mass measuring 12.8×9.4×6.0 cm with mild ascites and no nodal or bowel involvement (Figure 1A). CT of the thorax was normal. On surgical exploration there were multiple broad-based, pedunclated, ileo-jejunal masses clumped as a singular mass lying in the pouch of Douglas (Figure 1B). There were few suspicious omental nodules. Uterus and adnexae were normal. Frozen section of the mass was reported as gastrointestinal stromal tumor (GIST), which was confirmed in the final pathology report supported by immunohistochemistry (Figure 2). Ileo-jejunal resection was done with complete omentectomy. The patient is currently receiving adjuvant treatment with imatinib mesylate.