Indian Journal of Pathology and Microbiology
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Year : 2022  |  Volume : 65  |  Issue : 4  |  Page : 891-894

Evaluation of immunocytochemistry on destained giemsa stained smears as an alternative to conventional technique

1 Department of Pathology, Maulana Azad Medical College, New Delhi, India
2 Department of Surgery, Maulana Azad Medical College, New Delhi, India

Correspondence Address:
Meeta Singh
Department of Pathology, Maulana Azad Medical College, New Delhi - 110 002
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijpm.ijpm_34_21

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Introduction: Protocol for immunocytochemical (ICC) staining in May-Grünwald Giemsa (MGG)–stained smears has been difficult to establish. It is the need of the hour to be able to use prestained slides for ICC in specific cases to deliver timely diagnoses and reduce inconvenience to patients. Aims and Objectives: To evaluate and compare the use of MGG-stained smears for the purpose of ICC, after de-staining and saline rehydration to that of routine standard ICC. Materials and Methods: A prospective study was conducted on 40 FNAC samples: 25 cases of breast disease and 15 cases of reactive lymphoid hyperplasia known to express pancytokeratin and leukocyte common antigen (LCA)/CD45, respectively. Air-dried smears of each case were stained by standard MGG stain and after the report was dispatched, one smear was selected and sent for ICC. The smears were analyzed to determine the overall result and grade each smear semi-quantitatively with respect to staining-intensity, stain-localization, staining-uniformity, counter-staining, and background-staining. Observations and Results: The proposed protocol was inferior to conventional ICC in all the parameters, more pronounced in pancytokeratin than LCA/CD45. Only 8% of air-dried smears stained for pancytokeratin showed optimal stain intensity (as opposed to 44% of wet-fixed smears), whereas only 14.3% of air-dried smears were optimally stained for LCA (as opposed to 85.7% of wet-fixed smears). Conclusion: The proposed protocol of de-stained Giemsa smears as an alternative to conventional technique for ICC was unsuccessful in giving satisfactory results.

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