Abstract
To evaluate the association of tumor budding (TB) with prognostic histomorphological parameters in oral squamous cell carcinoma (OSCC) and to investigate the correlation of TB intensity with epithelial to mesenchymal transition (EMT). A total of 200 cases diagnosed as OSCC were selected and their TB status was reviewed using Hematoxylin and eosin (H and E) and Immunohistochemistry (IHC). Correlation with histomorphological prognostic parameters was done. Also, IHC for Vimentin and E-cadherin was performed to look for EMT. On H and E examination, TB was observed in 154/200 (77%). About 88/154 (57.14%) cases showed a high TB (>5 TB/10 hpf) which increased to 100/154 (64.9%) cases on IHC staining. The intensity of TB was significantly associated with tumor grade and depth of invasion. It was also significantly associated with reduced expression for E-Cadherin and upregulation of Vimentin establishing a pathogenetic correlation between the TB and EMT. Therefore, our results suggest that TB is associated with poor prognosis and histologically represents EMT in OSCC which further adds to the aggressiveness of the tumor.
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