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Related Experiment Videos

Diffuse large cell non-Hodgkin's lymphoma, CD30+, T-cell phenotype.

Lisa Moed Gruson1, Jo-Ann Latkowski

  • 1Department of Dermatology, New York University School of Medicine, USA.

Dermatology Online Journal
|January 13, 2006
PubMed
Summary

A rare CD30-positive cutaneous T-cell lymphoma presented as dermatitis progressing to nodules. Diagnosis involved histopathology and immunohistochemistry, with staging and treatment underway.

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Area of Science:

  • Dermatology
  • Oncology
  • Pathology

Background:

  • Cutaneous T-cell lymphomas (CTCLs) are a heterogeneous group of malignant neoplasms affecting the skin.
  • CD30-positive lymphoid proliferations can present diagnostic challenges, mimicking other inflammatory or neoplastic conditions.

Observation:

  • A 63-year-old Chinese male presented with eczematous dermatitis evolving into a multifocal nodular skin eruption.
  • Histopathology revealed a dermal infiltrate of lymphocytes, macrophages with granulomatous inflammation, and eosinophils, alongside reactive lymphoid follicles.

Findings:

  • Immunohistochemistry confirmed CD30 and leukocyte common antigen (LCA) positivity.
  • The absence of ALK-1 and CD20 supported a diagnosis of CD30-positive cutaneous T-cell lymphoma.

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Implications:

  • This case highlights the importance of thorough histopathologic and immunohistochemical evaluation for diagnosing CD30+ cutaneous T-cell lymphoma.
  • Accurate diagnosis is crucial for appropriate staging and guiding treatment strategies, including nodule excision, radiation, and chemotherapy.