Saudi Journal of Pathology and Microbiology (SJPM)
Volume-5 | Issue-12 | 544-548
Original Research Article
Immunohistochemical Expression of Progesterone Receptors and Ki-67 in Meningioma
Dr. Syed Shakir Noman
Published : Dec. 31, 2020
Abstract
Introduction: Meningiomas are the most common primary benign tumors of the central nervous system (CNS) as well as intradural part of the spinal cord. The prevalence of expression of progesterone receptor (PR) among patients with meningioma has been reported to be determined by different clinicopathologic factors particularly tumor grade as it was established by the WHO. Ki-67 is a nuclear non histone protein. It is used as a marker of proliferative activity and as a prognostic indicator in many tumors like breast carcinomas, neuroendocrine tumors, prostate, brain, nephroblastomas and lung. Materials and Methods: This is a Prospective study conducted in the Department of Pathology at Dr. V.R.K. Women’s Medical College Teaching Hospital & Research Centre. The study included histopathologically diagnosed cases of different histological variants of all intracranial and intraspinal meningiomas. A total number of 50 cases were studied over a period of 1 year. All intracranial and intraspinal meningiomas received at the Upgraded department of Pathology with adequate pre-operative, intra-operative and post-operative information, were included in the study. Results: The maximum number of cases were seen in the age group of 40-49 years (26.6%) followed by 50-59 years (23.3%). In the present study, out of 60 cases, 47 (78.3%) were females and the remaining 13 (21.6%) cases were males. Among the total 60 cases of Meningiomas, it was observed that intracranial location was more commonly involved comprising of 56 (93.3%) cases followed by Intraspinal location observed in 04 (6.6%) cases. Overall including the both grades total 51 cases out of 60 i.e. 85% were positive for PR, and 9 cases (including both the grades) i.e. 15% were negative for PR. Most of the grade I meningiomas (50 out of 56 cases i.e. 89.2% of grade I tumors) were positive for PR and few (6 out of 56 i.e. 10.7% of grade I tumors) were negative. Conclusion: Present study concluded that meningiomas will express PR. And this expression of PR has a significant inverse relationship with Ki- 67 i.e. as the Ki-67 expression denotes grade of meningioma, with increasing grade PR expression is reduced. So, Immuno histochemical staining with Ki-67 and PR antibody will help in deciding the grade of meningioma and helps to select the cases for which hormonal therapy can be employed.