Figure1: Low power view of the cyst, showing bland squamous epithelium lining it, with keratin debris within the lumen and a dense reactive lymphoid infiltrate surrounding the epithelium

Figure 2: CT Scan Neck; Left level III lymph node, with central necrosis

Figure 3: PET-CT axial scan neck; arrow indicates suspected left level III lymph node, with no focal metabolic uptake

Figure 2: CT Scan Neck; Left level III lymph node, with central necrosis

Figure 3: PET-CT axial scan neck; arrow indicates suspected left level III lymph node, with no focal metabolic uptake

Figure 4: Immunohistochemistry for P16 shows focal, scattered positive staining in the epithelial cells, the significance of which is entirely unclear