Correlation of mean AgNOR count with the histological grade of high grade gliomas-A five year study
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2019, Vol 18, Issue 3
Abstract
Background-Staining for Nucleolar organizing regions can be utilized as a modality to grade the glial tumours.AgNOR has advantage of being simple, ease of use, low cost and its good correlation with other proliferative markers, as their frequency within nucleus are significantly higher in malignant cells than in normal cells. Objectives-To correlate the AgNOR's mean number with the histological type and grade of high grade glial tumors. Methods-257 high grade glial tumors (140 Anaplastic Astrocytomas and 145 Glioblastomas)specimens received in the Pathology Deptt. G.R Medical College Gwalior (India) was studied. Sections were stained with routine H & E stain & with AgNOR stain.All Glial tumours were categorized and graded histologically. The mean AgNOR values (mAgNOR) per nuclei were determined. Results-The average values of mean AgNOR i.e. mAgNOR/nucleus presented a linear increase with increasing grade of malignancy from 2.74 for Anaplastic Astrocytoma (GIII), to 3.58 for Glioblastoma (GIV). Conclusion- The malignancy grade of Glial tumors can be established both on histological features of the conventional stained sample and on the average number, the shape and the distribution of AgNORs within tumoral nuclei. The no. of AgNORs increased with increasing grade of malignancy .
Authors and Affiliations
Dr. Nitesh Rawat, Dr. Sudha Iyengar
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