Extraskeletal Ewing's Sarcoma With Vertebral Metastasis: A Case Report

Area of Science:

• Pediatric Oncology
• Skeletal and Soft Tissue Tumors
• Medical Imaging

Background:

• Ewing's sarcoma (ES) is the second most common bone tumor in young patients, with extraskeletal Ewing's sarcoma (EES) occurring rarely.
• Ewing's sarcoma family of tumors (ESFT) are characterized by specific chromosomal translocations, primarily between chromosomes 11 and 22.
• Accurate diagnosis and staging are critical due to the aggressive nature and poor prognosis associated with ESFT.

Observation:

• A case of a young female presenting with a palpable spinal lump, diagnosed as paravertebral and thoracic extraskeletal Ewing's sarcoma (EES).
• The tumor exhibited gradual growth over six months, accompanied by intermittent pain and fever.
• Physical examination revealed a non-tender, ovoid lump with smooth margins, measuring approximately 8 cm x 5 cm.

Findings:

• Magnetic resonance imaging (MRI) was instrumental in diagnosing EES, planning surgical interventions, and assessing treatment response.
• Differential diagnoses included embryonal rhabdomyosarcoma and lymphoma, with immunohistochemical markers aiding in definitive diagnosis.
• MRI proved vital for local staging, detecting recurrences, and identifying metastatic spread.

Implications:

• Extraskeletal Ewing's sarcoma (EES) should be considered in the differential diagnosis of soft tissue masses in pediatric patients.
• Early detection and prompt diagnosis are essential for improving outcomes in EES.
• The role of MRI in the comprehensive management of EES, from diagnosis to monitoring, is significant.