Vulvar Myxoid Liposarcoma and Well Differentiated Liposarcoma With Molecular Cytogenetic Confirmation: Case Reports With Review of Malignant Lipomatous Tumors of the Vulva

Int J Gynecol Pathol. 2015 Jul;34(4):390-5. doi: 10.1097/PGP.0000000000000170.

Abstract

Malignant lipomatous tumors of the vulva are uncommon. We present 2 cases of liposarcoma arising in the vulva: a myxoid liposarcoma harboring DDIT3 and FUS rearrangements and a well differentiated liposarcoma/atypical lipomatous tumor harboring MDM2 amplification detected by fluorescence in situ hybridization. Both cases are the first liposarcomas of this site to be confirmed by molecular cytogenetic analysis. We also review the literature's cases of liposarcoma to further examine the clinicopathologic features of these tumors.

Publication types

  • Case Reports
  • Review

MeSH terms

  • Adult
  • Aged
  • Cytogenetics
  • Female
  • Gene Rearrangement
  • Humans
  • In Situ Hybridization, Fluorescence
  • Lipoma / genetics
  • Lipoma / pathology*
  • Liposarcoma, Myxoid / genetics
  • Liposarcoma, Myxoid / pathology*
  • Proto-Oncogene Proteins c-mdm2 / genetics
  • RNA-Binding Protein FUS / genetics
  • Transcription Factor CHOP / genetics
  • Vulva / pathology*
  • Vulvar Neoplasms / genetics
  • Vulvar Neoplasms / pathology*

Substances

  • DDIT3 protein, human
  • FUS protein, human
  • RNA-Binding Protein FUS
  • Transcription Factor CHOP
  • MDM2 protein, human
  • Proto-Oncogene Proteins c-mdm2