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Related Experiment Videos

CD7/CD19 double-positive T-cell acute lymphoblastic leukemia.

Shinya Fujisawa1, Fumihiko Tanioka, Toshihiko Matsuoka

  • 1Department of Hematology, Hamamatsu Medical Center, Hamamatsu, Japan. shinfuji@hmedc.or.jp

International Journal of Hematology
|June 8, 2006
PubMed
Summary

This study details a rare case of T-cell acute lymphoblastic leukemia (T-ALL) in a 52-year-old man. The patient achieved complete remission with standard chemotherapy, highlighting effective treatment for this aberrant leukemia subtype.

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Area of Science:

  • Hematology
  • Oncology

Background:

  • T-cell acute lymphoblastic leukemia (T-ALL) is a rare lymphoid malignancy.
  • Aberrant phenotypes in T-ALL can complicate diagnosis and treatment.
  • Early detection and appropriate therapy are crucial for patient outcomes.

Observation:

  • A 52-year-old male presented with cervical lymphadenopathy, mediastinal lymphadenopathy, and pleural effusion.
  • Immunophenotyping revealed unusual co-expression of B-cell markers (CD19, CD79a) alongside T-cell markers (cytoplasmic CD3, CD7) in tumor cells.
  • Bone marrow analysis showed positivity for CD10 and CD13 in addition to the aberrant markers, with normal karyotype.

Findings:

  • The patient was diagnosed with T-ALL exhibiting an aberrant immunophenotype.
  • Standard chemotherapy for acute lymphoblastic leukemia (ALL) induced a rapid and complete remission (CR).

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  • The patient remains in CR without requiring hematopoietic cell transplantation.

    • Implications:

    • This case underscores the importance of comprehensive immunophenotyping for diagnosing rare T-ALL subtypes.
    • Standard chemotherapy can be effective even in T-ALL with aberrant phenotypes.
    • Further research into the biology and treatment of aberrant T-ALL is warranted.