An immunohistochemical study of the bone marrow lesions of systemic mastocytosis: Expression of stem cell factor by lesional mast cells

Cem Akin, Elaine S. Jaffe, Mark Raffeld, Arnold S. Kirshenbaum, Trisha Daley, Pierre Noel, Dean D. Metcalfe

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

The bone marrow biopsy in mastocytosis often reveals characteristic mast cell collections associated with lymphoid cell aggregates. There is limited information on the composition of these aggregates and whether they contain cytokines important to mast cell growth and development. We thus performed an immunohistochemical characterization of bone marrow lesions in 7 patients with systemic indolent mastocytosis. In nodular lesions, the collections of mast cells were surrounded by lymphoid aggregates; these aggregates consisted of a mixture of B and T cells. Immunohistochemical staining for stem cell factor (SCF) revealed the presence of this cytokine in the lesional mast cells with a granular staining pattern. These results show that the characteristic nodular lesions observed in bone marrow biopsy specimens of patients with mastocytosis bear features of benign lymphoid aggregates and that SCF is present in these lesions, creating a potential autocrine orparacrine growth and differentiation loop for mast cells and lymphoid progenitors.

Original languageEnglish (US)
Pages (from-to)242-247
Number of pages6
JournalAmerican journal of clinical pathology
Volume118
Issue number2
DOIs
StatePublished - Aug 2002

Keywords

  • B lymphocytes
  • Benign lymphoid aggregates
  • Bone marrow
  • Mast cells
  • Mastocytosis
  • Stem cell factor
  • T lymphocytes

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

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