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Related Experiment Videos

Blastoid NK cell leukemia/lymphoma with cutaneous involvement.

M Ginarte1, M T Abalde, C Peteiro

  • 1Department of Dermatology, Complejo Hospitalario Universitario, Faculty of Medicine, Santiago de Compostela, Spain.

Dermatology (Basel, Switzerland)
|November 30, 2000
PubMed
Summary

This case study presents a rare blastoid natural killer (NK) cell lymphoma in a 72-year-old man, diagnosed via immunophenotyping and genetic analysis. The patient achieved complete remission after treatment, highlighting effective therapeutic responses.

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Area of Science:

  • Hematology
  • Oncology
  • Immunology

Background:

  • Malignant neoplasms of natural killer (NK) cells are defined by CD56 positivity and lack of monoclonal T cell receptor (TCR) gene rearrangement.
  • Recent classifications categorize these into four types: nasal and nasal-type NK cell lymphoma, aggressive NK cell leukemia/lymphoma, and blastoid NK cell leukemia/lymphoma.

Observation:

  • A 72-year-old Caucasian male presented with a blastoid neoplasm lacking azurophilic granules.
  • Immunophenotyping revealed positivity for CD2, CD4, HLA-DR, CD45, and CD56, with negativity for CD3 and CD5.
  • Epstein-Barr virus (EBV) in situ hybridization and TCR gene rearrangement PCR were negative.

Findings:

  • The patient was diagnosed with blastoid NK cell lymphoma based on the observed clinical and laboratory findings.

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  • Cutaneous lesions were the initial clinical manifestation of this advanced-stage disease.

    • Implications:

    • This case expands the understanding of blastoid NK cell lymphoma presentation and diagnosis.
    • The complete response to treatment in an advanced-stage case suggests potential therapeutic efficacy for this rare malignancy.