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Ewing sarcoma of the small intestine
T W Shek1, G C Chan, P L Khong
1Department of Pathology, The University of Hong Kong, Queen Mary Hospital, Pokfulam. whshek@hkucc.hku.hk
Journal of Pediatric Hematology/Oncology
|March 7, 2002
Summary
This report details a rare pediatric case of Ewing sarcoma (ES) in the small intestine. Diagnosis was confirmed through histology, immunohistochemistry, and molecular testing, highlighting a unique occurrence of this cancer.
Area of Science:
- Pediatric Oncology
- Skeletal and Soft Tissue Tumors
Background:
- Ewing sarcoma (ES) is a rare bone and soft tissue cancer primarily affecting children and young adults.
- Small intestinal tumors are uncommon in pediatric populations, with sarcomas being particularly rare.
Observation:
- A 9-year-old girl presented with progressive abdominal distension.
- Computed tomography revealed a large small bowel mass.
- Histopathologic examination confirmed Ewing sarcoma with characteristic features.
Findings:
- The resected tumor exhibited typical histologic, immunohistochemical, and ultrastructural findings of ES.
- The tumor recurred 18 months post-surgery in the pelvic cavity.
- Molecular analysis of the recurrent tumor identified the diagnostic EWS-FLI1 gene fusion.
Implications:
- This case underscores the possibility of Ewing sarcoma occurring in the small intestine, a highly unusual location.
- Early recognition and molecular confirmation are crucial for diagnosis and management of rare pediatric malignancies.
- Further research into the unique biology and behavior of small intestinal ES may improve treatment strategies.