Virchows Archiv

, Volume 451, Issue 4, pp 839–845 | Cite as

Clear cell sarcoma of the ileum: report of a case and review of literature

  • Camilla E. Comin
  • Luca Novelli
  • Daniela Tornaboni
  • Luca Messerini
Case Report

Abstract

Clear cell sarcoma (CCS) is a high grade soft tissue sarcoma with a distinct molecular profile and with morphological features resembling those of melanoma. CCS has been rarely described in other locations other than the soft tissues, including the gastrointestinal tract. In this study, we report a case of CCS arising in the ileum of a 31-year-old woman. Histologically, the tumor involved the entire thickness of the intestinal wall. Tumor cells were polygonal or fusiform, with clear or eosinophilic cytoplasm, arranged in a uniform nested to fascicular growth pattern. Immunohistochemical studies revealed strong positivity for vimentin and S-100 protein. HMB-45, Melan-A, tyrosinase, cytokeratins, EMA, smooth muscle actin, CD34, CD31, CD117, CD99, synaptophysin, chromogranin A, CD56, and NSE were negative. Fluorescence in situ hybridization analysis demonstrated the presence of a t(12;22)(q13;q12) translocation, the diagnostic hallmark of CCS of soft parts. The present case, together with a detailed review of the literature on this topic, demonstrates that the gastrointestinal tract is a possible site of CCS of soft tissues and that making a reliable diagnosis of this tumor requires cytogenetic or molecular diagnostic investigations.

Keywords

Clear cell sarcoma Gastrointestinal tract Immunohistochemistry FISH 

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Camilla E. Comin
    • 1
  • Luca Novelli
    • 1
  • Daniela Tornaboni
    • 2
  • Luca Messerini
    • 1
  1. 1.Dipartimento di Patologia Umana ed OncologiaUniversità degli Studi di FirenzeFirenzeItaly
  2. 2.Anatomic Pathology UnitMassa e Carrara HospitalMassaItaly

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