Intestinal Ewing Sarcoma Misdiagnosed as an Adnexal Mass in a Young Woman
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Date
2024
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Abstract
Extraosseous Ewing’s sarcoma is an extremely rare tumor. In the literature, intestinal Ewing’s sarcoma was reported in 20 cases, and omental Ewing’s sarcoma was reported in only two cases. In this case report, we report a 23-year-old female who presented with the complaint of diffuse abdominal pain. Abdominal ultrasound and whole-body computed tomography revealed a mass starting from the adnexal area and extending between the intestinal loops. Serum levels of tumor markers were high. The serum levels of carbohydrate antigen-125 (CA-125) and carcinoembryonic antigen-19.9 (CA-19.9) were high (427.5 U/mL and 67.9 U/mL, respectively). Laparotomic exploration was performed with the preliminary diagnosis of an adnexal mass, and a mass originating from the small intestine meso and completely covered by the omentum was excised. Histological evaluation reported intestinal and omental origin of Ewing’s sarcoma. This case highlights the importance of rare extraosseous Ewing’s sarcoma, which should be included in the differential diagnosis of a young female with intra-abdominal mass. © 2024 Galenos Publishing House. All rights reserved.
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CD56 antigen , CD99 antigen , cyclophosphamide , dactinomycin , etoposide , granulocyte colony stimulating factor , ifosfamide , synaptophysin , vimentin , vincristine , abdominal pain , adnexa disease , adult , Article , bleeding , cancer chemotherapy , case report , clinical article , computer assisted tomography , contrast enhancement , diagnostic error , end to end anastomosis , Ewing sarcoma , ewrs1 gene , female , fluorescence in situ hybridization , gene , gene rearrangement , histopathology , human , human tissue , immunohistochemistry , intestinal sarcoma , laparotomy , liver metastasis , lymph node metastasis , lymph vessel metastasis , mesentery , metastasis , neutropenia , nuclear magnetic resonance imaging , paracentesis , peritoneum metastasis , systemic disease , tumor necrosis , tumor volume , whole body CT , young adult