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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
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.
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.
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.