Mucin-2 Expression in Primary and Recurrent Cases of Pleomorphic Adenoma in Tertiary Care Hospitals of Peshawar

Background: Pleomorphic adenoma (PA) is a benign tumor, with a high recurrence rate. This study aimed to compare the Mucin-2 (MUC2) expression in primary and recurrent cases of PA in tertiary care hospitals of Peshawar. Methods: In this study, there were 60 PA cases, 51 being primary lesions and 9 recurrent lesions. Formalin-fixed and paraffin-embedded (FFPE) blocks of the two groups were examined for the immunohistochemical expression of MUC2. The clinicopathological parameters were also examined. This study was conducted at the Pathology Department, Pakistan Institute of Medical Sciences (PIMS), Peshawar, between January 2019 to January 2021. A nonprobability sampling technique was used while collecting the samples. SPSS version 21 was used and p-value