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Year : 2013  |  Volume : 9  |  Issue : 1  |  Page : 71-79

Correlation of morphologic and cytochemical diagnosis with flowcytometric analysis in acute leukemia

1 Department of Pathology, Kasturba Medical College, Manipal, India
2 Department of Pathology, Melaka Manipal Medical College, Manipal, Karnataka, India

Correspondence Address:
Sushma Belurkar
Department of Pathology, Basic Sciences Building, Kasturba Medical College, Manipal
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0973-1482.110378

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Introduction: The classification of acute leukemias has revolutionized over the years. Immunophenotyping of acute leukemia has gained popularity because of its influence on treatment and prognosis of the disease. The various antigens expressed by the leukemic cells can be assessed by flowcytometry (FCA) and can be used in rendering specific treatment and predicting the outcome of the different types of acute leukemia. Aims: The main aim of this study was to compare the morphologic and cytochemical diagnoses with flowcytometric diagnoses in acute leukemia and to analyze the usefulness of FCA over morphology. Results: In this study we analyzed 50 cases of acute leukemia and found concordance rate as high as 86% between morphologic/cytochemical diagnosis and flowcytometric diagnosis. Of these, complete concordance was seen in 58% of the cases and partial concordance was seen in 22% of the cases. Non-concordance was seen in only 4% of our cases. In remaining 16% of our cases FCA helped in sub classifying the acute leukemia where morphology and cytochemistry had failed to do so. CD19 and 20 were found to be consistent B-cell markers and CD3 was a very specific marker for T-cell leukemia. CD13 and 33 were important myeloid markers and were aided by other secondary panel of markers like CD14, CD117 and CD41. Conclusion: FCA not only helps in confirming morphologic diagnosis in acute leukemia but also helps in assigning specific lineage to the blasts, particularly in acute lymphoid leukemia. Immunophenotyping is of utmorst importance in classifying acute leukemia as it greatly influences the treatment and the prognosis.

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