Retroperitoneal Extraskeletal Ewing's Sarcoma

Si Hyung Lee; Byung Ik Jang

doi:10.4166/kjg.2013.62.4.253

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Lee and Jang: Retroperitoneal Extraskeletal Ewing's Sarcoma

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Korean J Gastroenterol 2013;62(4):253-255.

Published online: 4 October 2013

DOI: https://doi.org/10.4166/kjg.2013.62.4.253

Retroperitoneal Extraskeletal Ewing's Sarcoma

Si Hyung Lee, Byung Ik Jang

Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea

Correspondence to: Byung Ik Jang, Department of Internal Medicine, Yeungnam University College of Medicine, 170 Hyeonchung-ro, Nam-gu, Daegu 705-717, Korea. Tel: +82-53-620-3830, Fax: +82-53-654-8386, E-mail: jbi@med.ac.kr

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

References

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3. Downing JR, Head DR, Parham DM, et al. Detection of the (11;22)(q24;q12) translocation of Ewing's sarcoma and peripheral neuroectodermal tumor by reverse transcription polymerase chain reaction. Am J Pathol. 1993; 143:1294–1300.

4. Raney RB, Asmar L, Newton WA Jr, et al. Ewing's sarcoma of soft tissues in childhood: a report from the Intergroup Rhabdomyosarcoma Study, 1972 to 1991. J Clin Oncol. 1997; 15:574–582.

5. Murtaza B, Saeed S, Khan NA, et al. Retroperitoneal masses: different clinical scenarios. J Ayub Med Coll Abbottabad. 2008; 20:161–164.

6. Kennedy JG, Eustace S, Caulfield R, Fennelly DJ, Hurson B, O'Rourke KS. Extraskeletal Ewing's sarcoma: a case report and review of the literature. Spine (Phila Pa 1976). 2000; 25:1996–1999.

7. Lee WS, Kim YH, Chee HK, et al. Multimodal treatment of primary extraskeletal Ewing's sarcoma of the chest wall: report of 2 cases. Cancer Res Treat. 2009; 41:108–112.

8. El Weshi A, Allam A, Ajarim D, et al. Extraskeletal Ewing's sarcoma family of tumours in adults: analysis of 57 patients from a single institution. Clin Oncol (R Coll Radiol). 2010; 22:374–381.

Fig. 1.

Initial CT scan. (A) Pre-enhance axial image shows 3.7 cm sized cystic mass without solid component. (B) This mass is not enhanced after contrast administration.

Fig. 2.

Follow-up CT scan after 6 months. (A) The mass has enlarged to about 6 cm in size. (B) Contrast-enhanced abdominal CT scan shows 6 cm sized heterogenous enhancing mass with central low attenuation at retrocaval area.

Fig. 3.

(A) Microscopic finding of ultrasound guided biopsy shows small round neoplastic cells with irregular nuclei and sparse cytoplasm (H&E,×400). (B) This tumor cells shows strong diffuse membrane immunohistochemical reactivity with CD99 antibodies (CD 99, ×400).

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