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Spinal epidural extraskeletal Ewing sarcoma in an adolescent boy: a case report
Fani Athanassiadou1, Athanassios Tragiannidis, Maria Kourti
12nd Pediatric Department, Hematology-Oncology Unit, AHEPA Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece. atragian@hotmail.com
Pediatric Hematology and Oncology
|March 7, 2006
Summary
Extraskeletal Ewing sarcoma (EES) is a rare soft tissue cancer found in adolescents. This case highlights EES in the spinal epidural and paravertebral spaces, confirmed by histology, immunohistochemistry, and a specific chromosomal translocation.
Area of Science:
- Oncology
- Pathology
- Genetics
Background:
- Extraskeletal Ewing sarcoma (EES) is a rare malignant neoplasm of soft tissues, histologically resembling skeletal Ewing sarcoma.
- EES primarily affects adolescents and young adults, often presenting in the paravertebral regions.
- Differential diagnosis for EES includes other small, blue round cell tumors.
Observation:
- This report details a rare case of EES.
- The tumor involved the spinal epidural and paravertebral spaces in an adolescent male.
- The clinical presentation mimicked other small, round blue cell tumors.
Findings:
- Histologic analysis and immunohistochemistry confirmed the diagnosis of EES.
- The characteristic t(11;22)(q24;q12) chromosomal translocation was identified using reverse transcriptase-polymerase chain reaction (RT-PCR).
- Diagnostic confirmation relied on integrated clinicopathological, immunohistochemical, and molecular genetic data.
Implications:
- This case underscores the importance of considering EES in the differential diagnosis of pediatric and adolescent spinal tumors.
- Accurate diagnosis requires a combination of histopathology, immunohistochemistry, and molecular testing.
- Understanding the genetic underpinnings, such as the EWS-FLI1 fusion gene from the t(11;22) translocation, is crucial for diagnosis and potential targeted therapies.