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[Ewing's sarcoma in the retroperitoneum].

H Hara1, T Iwasawa, M Matsuhashi

  • 1Department of Urology, Toho University School of Medicine.

Nihon Hinyokika Gakkai Zasshi. the Japanese Journal of Urology
|September 1, 1991
PubMed
Summary

This case report details a rare retroperitoneal extraskeletal Ewing sarcoma in an 18-year-old female. Surgical removal was successful, with no recurrence observed two years post-operation.

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Area of Science:

  • Oncology
  • Surgical Pathology
  • Pediatric Oncology

Background:

  • Extraskeletal Ewing sarcoma (EES) is a rare malignant tumor.
  • Retroperitoneal EES is exceptionally uncommon, posing diagnostic and therapeutic challenges.

Observation:

  • An 18-year-old female presented with a large retroperitoneal tumor and hydronephrosis.
  • Imaging revealed a 77 x 45 mm retroperitoneal mass involving the right ureter.
  • Histopathological diagnosis confirmed extraskeletal Ewing sarcoma.

Findings:

  • Surgical management involved right total nephroureterectomy and partial cystectomy.
  • The resected tumor measured 90 x 70 mm and weighed 120 g.
  • Postoperative systemic examination showed no abnormalities, and no recurrence was noted at 2-year follow-up.

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Implications:

  • This case highlights the rarity and clinical presentation of retroperitoneal EES.
  • Successful surgical resection and monitoring are crucial for managing this rare condition.
  • Further research into EES, particularly retroperitoneal variants, is warranted to improve outcomes.