Related Experiment Videos
Specific cutaneous lesions in a CD8+ peripheral T-cell lymphoma
R M Marti1, T Estrach, J Palou
1Department of Dermatology, Hospital Clinic i Provincial, Universidad de Barcelona, Spain.
International Journal of Dermatology
|September 1, 1992
Summary
This study details an aggressive peripheral T-cell lymphoma with unique skin manifestations. Distinctive features include strong epidermotropism and an unusual CD8+ immunophenotype, aiding differential diagnosis.
Area of Science:
- Dermatology
- Oncology
- Hematopathology
Background:
- Peripheral T-cell lymphoma (PTCL) is a group of aggressive non-Hodgkin lymphomas.
- Cutaneous involvement in PTCL can present diagnostic challenges.
- Understanding unique histopathologic features is crucial for accurate diagnosis and patient management.
Observation:
- Histopathologic, immunohistochemical, and ultrastructural examination of cutaneous lesions from a patient with disseminated PTCL.
- Observed extremely strong epidermotropism, indicating significant T-cell infiltration into the epidermis.
- Identified an aberrant CD8+ immunophenotype with the absence of the pan T antigen CD5, a rare finding.
Findings:
- The PTCL case exhibited distinctive features not previously reported in the literature.
- Presence of giant cytoplasmic granules was noted, adding to the unique profile of the lymphoma.
- Comparison with other skin-involving hematologic malignancies like cutaneous T-cell lymphoma and adult T-cell leukemia/lymphoma was performed.
Implications:
- The distinctive features may aid in differentiating this aggressive PTCL from other cutaneous lymphomas.
- The aberrant immunophenotype provides valuable insights into T-cell maturation and aberrant antigen expression in lymphoma.
- This case highlights the importance of comprehensive histopathologic and immunophenotypic analysis in challenging cutaneous lymphoid infiltrates.