Figure 2

Duodenal Biopsy. 2a:. Photomicrograph of haematoxylin and eosin stained slide at low power ( lens objective x2) shows the presence of cohesive sheets of malignant nonkeratinizing squamous cells (*) adjacent to normal duodenal mucosa (#) 2b: Photomicrograph of staining with Cytokeratin 5 shows strong cytoplasmic and membrane staining of the lesional cells (*) with no staining in the adjacent duodenal mucosa (#) 2c: Photomicrograph of staining with P63 shows strong nuclear staining of the lesional cells (*) with no staining in the adjacent duodenal mucosa (#) 2d: Photomicrograph of staining with P16 shows diffuse cytoplasmic and nuclear staining of the lesional cells (*) with no staining in the adjacent duodenal mucosa (#)