Meningioma-like tumor of the skin: An ultrastructural and immunohistochemical study

R. J. Barr, E. S. Yi, J. L. Jensen, R. B. Wuerker, S. Y. Liao

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

Three unusual cutaneous tumors are described along with ultrastructural and immunohistochemical studies. All lesions were asymptomatic red-brown papulonodules. Light microscopic examination revealed a whorled configuration of spindle-shaped cells, some concentrically arranged around blood vessels. Immunohistochemical panels exhibited positive staining only with antibody to vimentin and negative staining with antibodies against S-100 protein, muscle markers, cytokeratin, epithelial membrane antigen, Leu 7, type IV collagen, and factor XIIIa, ruling out obvious nevomelanocytic, nerve sheath, meningothelial, smooth muscle, and perithelial differentiation. Electron microscopic examination demonstrated cells producing poorly formed collagen fibrils, sparse collagen fibers, and possessing occasional ill-defined intercellular junctions between their elongated cell processes. This rare tumor is considered to be either an immature fibrohistiocytic or possibly a nerve sheath neoplasm with striking similarities to so-called canine hemangiopericytoma. Because the prominent whorled pattern was reminiscent of meningioma, the lesion was referred to as meningioma-like tumor of the skin.

Original languageEnglish (US)
Pages (from-to)779-787
Number of pages9
JournalAmerican Journal of Surgical Pathology
Volume17
Issue number8
DOIs
StatePublished - Jan 1 1993

Keywords

  • Cutaneous meningioma
  • Cutaneous neoplasm
  • Hemangiopericytoma
  • Skin

ASJC Scopus subject areas

  • Anatomy
  • Surgery
  • Pathology and Forensic Medicine

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