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August 22, 2025Veterinary Dermatology

Retrospective Evaluation of Clonality in Canine Erythema Multiforme

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Authors

KKKimberly S. KalosyMKM. Kelly KeatingWRWayne S. Rosenkrantz

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Overview

Retrospective evaluation highlights clonal and polyclonal T-cell expansions in canine EM and SJS, suggesting clinical implications.

Key Points

  • Canine erythema multiforme cases show both clonal and polyclonal T-cell expansions, indicating diverse immune responses.
  • Of the 12 cases reviewed, 11 presented with mild-to-moderate CD20 dermal infiltration, affecting treatment outcomes.
  • Observational analysis utilized clinical data along with histological and immunohistochemical evaluations to assess T-cell clonality.
  • Study highlights the importance of linking clinical response to histopathological results in immune-mediated dermatoses.

Cite This Study

Kalosy et al. (2025) studied this question.

synapsesocial.com/papers/68af55c6ad7bf08b1eadbcc8https://doi.org/10.1111/vde.70021
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Also Consider

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  1. 1Clinical, Histopathological and Molecular Characterisation of Canine Epitheliotropic Cutaneous T‐Cell Lymphoma With Cytotoxic Interface Dermatitis: A Retrospective Case Series2025
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  5. 5Multifocal non-epitheliotrophic cutaneous B-cell Lymphoma in a dog: cytologic, histopathologic, immunophenotypic, and molecular findings2026