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- W88188625 abstract "To distinguish reactive mesothelial cells from malignant cells in serous effusions using manual and automated methods of enumeration of argyrophilic nucleolar organizer regions (AgNORs).In this prospective study, 38 samples of benign (19 cases) and malignant (19 cases) serous effusions were included. AgNOR stain was used in each case along with routine Papanicolaou stain. The smears were examined under an oil immersion objective, and AgNOR dots were counted by direct observation independently by 2 observers. Automated AgNOR counting and morphometry were performed with a Quantimet 600 image cytometer (Leica, Cambridge, England). At least 100 cells were counted in each case. The number of AgNOR dots in individual cells, AgNOR area, nuclear area, AgNOR vs. nuclear area and nuclear perimeter were measured. Data on benign and malignant cells were compared.The AgNOR dots were discrete and smaller in benign effusion cases as compared to coarse and aggregated in malignant effusion cases. In benign reactive effusion cases the mean number of AgNOR dots per nucleus was 2.33 +/- 0.71 and 2.83 +/- 1.15 by the manual and automated method, respectively, whereas that for malignant effusion cases was 7.48 +/- 2.51 and 8.09 +/- 1.69 by the manual and automated method, respectively. Mean total AgNOR areas in benign and malignant groups were 4.77 +/- 2.66 microns 2 and 38.22 +/- 13.71 microns 2, respectively. Mean nuclear area, nuclear perimeter and ratio of AgNORs vs. nuclear area were 48.72 +/- 19.30 microns 2, 24.68 +/- 10.25 microns and .098 in benign effusion cases as compared to 174.25 +/- 82.36 microns 2, 69.03 +/- 27.23 microns and 0.22 in malignant effusion samples. All these values were significantly higher (P < .001, Student's t test) in malignant cells as compared to benign reactive cells.AgNOR dot enumeration, AgNOR area and ratio of AgNORs to nuclear area are valuable adjuncts to cytomorphology in differentiating reactive mesothelial cells from malignant cells in serous effusions. Automated AgNOR counting is rapid and less cumbersome." @default.
- W88188625 created "2016-06-24" @default.
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- W88188625 date "2003-10-01" @default.
- W88188625 modified "2023-09-23" @default.
- W88188625 title "Manual and automated AgNOR count in differentiating reactive mesothelial from metastatic malignant cells in serous effusions." @default.
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