Abstract
Aim To examine the relationship between tumor differentiation, parametrial, and lymphovascular invasion, as well as the differential expression pattern of cyclooxygenase-2 (COX-2) in cervical intraepithelial neoplasia and various forms of cervical cancer. Methods Histologically diagnosed cases of in-situ and malignant lesions of the cervix were included in the study. Two sections were cut from paraffin blocks. One section was stained with Haematoxylin and Eosin (H&E) for morphologic diagnosis, and the other sections were subjected to COX-2 immunohistochemical staining. Cases of colon carcinoma were taken as positive controls. Cytoplasmic and membrane staining of tumor cells were considered as positive staining, and grading was done. Results Out of the 62 patients, 40 cases (64.5%) showed positive expression of COX-2 in squamous cell carcinoma when compared to in-situ cervical intraepithelial neoplasia and adenocarcinoma. The results were statistically significant, with a p-value of 0.003. Conclusion COX-2 expression is directly proportional to the level of grading of the tumor. The higher the grading, the higher the expression of COX-2. Selective COX-2 inhibitors increase the efficacy of chemotherapy or radiotherapy.
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