Journal of Cytology
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Year : 2019  |  Volume : 36  |  Issue : 2  |  Page : 79-83

Cytology microarray on cell block preparation: A novel diagnostic approach in fluid cytology

1 Department of Pathology, Burdwan Medical College, Burdwan, India
2 Department of Pathology, GB Pant Institute of Post Graduate Medical Education and Research, Maulana Azad Medical College, Delhi, India

Correspondence Address:
Dr. Shreosee Roy
Department of Pathology, Burdwan Medical College, Ganganiketan, Jamtala, Kalna Road, Burdwan, West Bengal - 713 101
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/JOC.JOC_15_17

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Background: The cytological examination of serous body effusions to diagnose and stage malignancy is well accepted in clinical medicine. Conventional smear (CS) and cell block (CB) study has to be complemented with immunohistochemistry (IHC) for a definitive diagnosis of malignancy and also to differentiate it from reactive mesothelial cells. Cytology microarray (CMA) is a modification of tissue microarray which involves core needle biopsy of multiple cell blocks and embedding it in a single block. Aim: The aim of this study was to assess the effectiveness of IHC technique in CMA for rapid diagnosis of malignancy and to reduce the cost of testing. Materials and Methods: In this study, 82 pleural fluids were collected and subjected to CS and CB study followed by IHC in CMA blocks. Six commonly used antibodies were applied to confirm malignancy and diagnose the primary. Results: Nineteen cases were diagnosed as malignancy by CB method. MOC-31 confirmed adenocarcinoma deposit in 67% cases of which 44% were proved to be of lung primary by TTF1. Conclusions: IHC on CMA blocks of effusion fluids is a very effective technique that can significantly reduce the cost of testing by >70%.

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