Simplified flow cytometric assessment in mycosis fungoides and sézary syndrome

Alexandra C. Hristov, Eric C. Vonderheid, Michael J. Borowitz

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


By using flow cytometry with markers for CD3, CD4, CD26, and CD7, we examined the blood samples of 109 patients for abnormal T cells: 69 patients with mycosis fungoides (MF)/Sézary syndrome (SS), 31 hospitalized control subjects, and 9 patients with inflammatory skin disease. T cells were identified as quantitatively abnormal (>15% CD26- or CD7- T cells) or phenotypically abnormal (CD26- or CD7- T cells with bright or dim CD3 or CD4 or bright CD7). Patients were followed for a median of 82 months, and abnormal T cells were correlated with diagnosis, clinical outcome, and other laboratory parameters. Abnormal T-cell populations were identified in 46% of patients with MF/SS (32/69) and correlated with disease extent. Quantitative abnormalities were more frequent than phenotypic abnormalities, and CD4+/CD26- T cells were more frequent than CD4+/CD7- T cells. CD26- T cells correlated better with disease extent than did CD7-. Increasing numbers of abnormal T cells were associated with worsening disease. Flow cytometry provides valuable information for diagnosis, prognosis, and therapeutic efficacy in MF/SS.

Original languageEnglish (US)
Pages (from-to)944-953
Number of pages10
JournalAmerican journal of clinical pathology
Issue number6
StatePublished - Dec 2011


  • Cutaneous T-cell lymphoma
  • Flow cytometry
  • Mycosis fungoides
  • Skin diseases
  • Sézary syndrome
  • T cells

ASJC Scopus subject areas

  • Pathology and Forensic Medicine


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