Evidence map›Paper›PMID 42153060›Full record

ArticleCureus2026

Flow Cytometry for Diagnosing Sézary Syndrome When Skin Biopsies Are Inconclusive: A Case Report.

Abdelhafid El Mrahi, Souha Denna, Mohammed Bensalah, Zerrouki Nassiba, Nada Zizi

Abstract readCase Reports
In one paragraph

Article in Cureus, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Abdelhafid El MrahiDermatology, Mohammed VI University Hospital, Medical School of Oujda, Mohammed First University, Oujda, MAR.
Souha DennaDermatology, Mohammed VI University Hospital, Medical School of Oujda, Mohammed First University, Oujda, MAR.
Mohammed BensalahBiological Hematology, Mohammed VI University Hospital, Medical School of Oujda, Mohammed First University, Oujda, MAR.
Zerrouki NassibaDermatology, Mohammed VI University Hospital, Medical School of Oujda, Mohammed First University, Oujda, MAR.
Nada ZiziDermatology, Mohammed VI University Hospital, Medical School of Oujda, Mohammed First University, Oujda, MAR.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Sézary syndrome (SS) is a rare leukemic variant of cutaneous T-cell lymphomas, accounting for a small proportion of cases, estimated at less than 5% of all cutaneous T-cell lymphomas, characterized by pruritic erythroderma, lymphadenopathy, and circulating clonal T lymphocytes. Diagnosis can be challenging when skin biopsies are non-diagnostic, potentially delaying treatment. Peripheral blood flow cytometry (FC) is essential for detecting aberrant T-cells, assessing clonality, which may be supported in selected cases by T-cell receptor beta-chain constant region 1 (TRBC1) expression analysis, quantifying tumor burden, and guiding tumor-node-metastasis-blood (TNMB) staging and follow-up. A 58-year-old man presented with diffuse pruritic erythroderma and lesions refractory to topical corticosteroids, systemic corticosteroids, methotrexate, and emollients. Repeated skin biopsies showed spongiotic or psoriasiform changes without evidence of malignancy. Peripheral blood smear revealed 5-7% Sézary cells. FC identified an aberrant cluster of differentiation (CD)4+ T-cell population representing 90% of lymphocytes, with CD7+, CD26-, and 97% TRBC1 positivity, confirming a clonal malignant population. Lymph node biopsy was consistent with T-cell lymphoma. TNMB classification was T4N3M0B2 (stage IVA2). The patient received peginterferon alfa-2a with topical corticosteroids and supportive care, leading to clinical and laboratory improvement. This case underscores the critical role of FC when skin biopsies are inconclusive. Comprehensive immunophenotyping, including TRBC1, confirms monoclonality, informs TNMB staging, and guides targeted therapy. Quantitative assessment of circulating malignant cells allows dynamic monitoring of treatment response. Early integration of peripheral blood FC in suspected SS improves diagnostic accuracy, reduces delays, and enables rapid initiation of targeted therapy, ultimately optimizing patient outcomes.

Indexed as

cutaneous t-cell lymphomadiagnosticflow cytometrysézary syndrometnmbtrbc1

Identifiers

PMID42153060
PMCPMC13180276

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.