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Related Experiment Videos

The bone marrow agar section: a morphologic and immunohistochemical evaluation

D A Arber1, R M Johnson, P A Rainer

  • 1Division of Pathology, City of Hope National Medical Center, Duarte, California.

Modern Pathology : an Official Journal of the United States and Canadian Academy of Pathology, Inc
|September 1, 1993
PubMed
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Agar embedding of bone marrow aspirate particles offers a valuable diagnostic method. This technique aids in bone marrow diagnosis, especially for detecting lymphoma, and shows superior immunohistochemical results.

Area of Science:

  • Hematology
  • Anatomic Pathology
  • Immunohistochemistry

Background:

  • Conventional bone marrow examination includes aspirate smears and biopsies.
  • Limitations exist in preserving cellular morphology and antigenicity in traditional preparations.
  • Agar embedding offers a potential alternative for bone marrow particle analysis.

Purpose of the Study:

  • To compare the diagnostic utility of agar embedding for bone marrow aspirate particles against conventional methods.
  • To evaluate the performance of immunohistochemical studies on agar-embedded sections versus bone marrow biopsies.
  • To assess the effectiveness of agar embedding in identifying specific hematologic malignancies and metastatic disease.

Main Methods:

  • A review of 503 consecutive bone marrow specimens was conducted.

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  • Agar embedding of bone marrow aspirate particles was compared with aspirate smears and bone marrow biopsies.
  • Immunohistochemical studies were performed on 43 paired agar sections and bone marrow biopsies.

    • Main Results:

    • Agar sections contained diagnostic material in 97.7% of 382 cases.
    • Focal lymphoma involvement was detected in two cases (0.4%) solely on agar sections.
    • Agar sections demonstrated superior immunoreactivity for lymphoproliferative disorders compared to bone marrow biopsies.

    Conclusions:

    • Agar embedding is a highly effective technique for bone marrow aspirate particle analysis.
    • This method can provide crucial diagnostic information, sometimes surpassing conventional biopsy techniques.
    • Agar embedding shows promise for improved immunohistochemical analysis in bone marrow pathology.