Clear Cell Sarcoma With Cutaneous Presentation in a 4-Year-Old Boy

Am J Dermatopathol. 2020 Sep;42(9):e131-e133. doi: 10.1097/DAD.0000000000001658.

Abstract

We report a case of a 4-year-old Brazilian boy, who presented with an erythematous and painful nodule involving the skin of his left arm. Immunohistochemistry was performed for S100, SOX10, CD34, desmin, SMA, HMB-45, CD1a, and CD163, and fluorescence in situ hybridization for EWSR1 gene rearrangement using a break-apart probe was completed. Immunohistochemistry showed bland spindle cells with "floret-like" appearance simulating a giant cell fibroblastoma; tumor cells were positive for S100 and SOX10; neoplastic cells were negative for CD34, desmin, SMA, HMB-45, CD1a, and CD163; and fluorescence in situ hybridization showed an EWSR1 gene rearrangement. We report the youngest known case of cutaneous involvement of clear cell carcinoma at the age of 4.

Publication types

  • Case Reports

MeSH terms

  • Biomarkers, Tumor / analysis
  • Biomarkers, Tumor / genetics
  • Biopsy
  • Child, Preschool
  • Gene Rearrangement
  • Humans
  • Immunohistochemistry
  • In Situ Hybridization, Fluorescence
  • Male
  • RNA-Binding Protein EWS / genetics
  • Sarcoma, Clear Cell / chemistry
  • Sarcoma, Clear Cell / genetics
  • Sarcoma, Clear Cell / pathology*
  • Skin Neoplasms / chemistry
  • Skin Neoplasms / genetics
  • Skin Neoplasms / pathology*

Substances

  • Biomarkers, Tumor
  • EWSR1 protein, human
  • RNA-Binding Protein EWS