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Related Experiment Videos

Acute leukaemia immunophenotyping in bone-marrow routine sections.

S A Pileri1, S Ascani, M Milani

  • 1Service of Pathologic Anatomy and Haematopathology, Institute of Haematology and Clinical Oncology 'L. & A. Seràgnoli', Bologna University, Bologna, Italy. pileri@almadns.unibo.it

British Journal of Haematology
|May 8, 1999
PubMed
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Immunohistochemistry on bone marrow paraffin sections is now a reliable tool for diagnosing acute leukaemias. Advanced techniques and antibodies enable accurate lineage determination, aiding classification, especially in difficult cases.

Area of Science:

  • Hematology
  • Oncology
  • Pathology

Background:

  • Immunohistochemistry on bone marrow paraffin sections for acute leukaemia diagnosis was historically limited due to poor marker preservation.
  • Recent advancements in antibody technology and antigen retrieval methods have improved the feasibility of analyzing routine samples.

Purpose of the Study:

  • To evaluate the utility of paraffin-embedded bone marrow section phenotyping for determining the cell lineage in acute leukaemias.
  • To assess the diagnostic relevance of these advanced immunohistochemical techniques in routine clinical practice.

Main Methods:

  • Studied 110 acute leukaemia cases using specific antibodies against key lineage markers (CD1a, CD3, CD15, CD20, CD34, CD68, CD79a, TdT, myeloperoxidase, glycophorin A, factor-VIII-related antigen).
  • Included various subtypes of acute myeloid leukaemia (AML) and acute lymphoblastic leukaemia (ALL), including mixed phenotypes.

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Main Results:

  • The combination of markers consistently identified the cell lineage (myeloid, lymphoid, or mixed) in all cases.
  • Specific phenotypic profiles indicative of distinct acute leukaemia subtypes were identified in some instances.
  • Bone marrow biopsy phenotyping proved to be a reliable diagnostic method.

Conclusions:

  • Immunohistochemistry on bone marrow paraffin sections is a valuable and reliable tool for acute leukaemia diagnosis.
  • This technique is particularly useful for classifying cases with absent peripheral blood blasts or 'dry tap' bone marrow aspirates.