Immunohistochemical markers in fibrohistiocytic lesions: factor XIIIa, CD34, S-100 and p75.

Journal Article (Journal Article)

BACKGROUND: The distinction between dermatofibroma (DF), dermatofibrosarcoma protuberans (DFSP), and other benign and malignant cutaneous spindle cell lesions frequently requires immunohistochemical staining. CD34 and factor XIIIa are the most commonly used immunostains; however, they may exhibit aberrant expression and introduce the potential for misdiagnosis. There is some data supporting that p75 and S100A6 may be additional helpful immunohistochemical markers. METHODS: We undertook a large case series examining the use of CD34 and factor XIIIa as well as p75 and S100A6 in DF, cellular DF, DFSP, indeterminate fibrohistiocytic lesion, and scar. RESULTS: As expected, CD34 stained DFSP, although it was usually negative in DF. Factor XIIIa was generally positive in DF and negative in DFSP. There were exceptions in both cases of DF and DFSP. S100A6 was routinely negative in all entities studied. P75 was negative in all cases except DFSP, approximately half of which showed weak and/or patchy positivity. CONCLUSIONS: We conclude that to date, CD34 and factor XIIIa remain the most reliable immunohistochemical markers for DF and DFSP.

Full Text

Duke Authors

Cited Authors

  • West, KL; Cardona, DM; Su, Z; Puri, PK

Published Date

  • May 2014

Published In

Volume / Issue

  • 36 / 5

Start / End Page

  • 414 - 419

PubMed ID

  • 24162384

Electronic International Standard Serial Number (EISSN)

  • 1533-0311

Digital Object Identifier (DOI)

  • 10.1097/DAD.0b013e3182a70396


  • eng

Conference Location

  • United States