Figure 2: HPE of biopsy from oropharyngeal mass showing undifferentiated tumour that was cytokeratin, EMA, NSE, LCA, CD20 positive but negative for HMB45 and myogenin indicating NHL. HPE: Histopathological evaluation, EMA: Epithelial membrane antigen, NSE: Neuron specific enolase, LCA: Leukocyte common antigen, NHL: Non-Hodgkin's Lymphoma