Fig. 3
From: An unusual case of lymphoma — a case of extranodal NK/T-cell lymphoma, nasal type
Histology of the lesion. A Low-power photomicrograph of ulcerated nasal mucosa and submucosa (×40). B Photomicrograph of ulcerated mucosal surface and underlying lymphoid infiltrate (×100). C Dense atypical lymphoid infiltrate at high power (×400). D Malignant lymphoid infiltrate between skeletal muscle fibres (blue arrow) at high power (×1000). E Immunohistochemistry (IHC) shows membrane positivity of tumour cells for CD45 (×400). F CD56 (×400). G IHC shows cytoplasmic positivity for CD3 (×400). H EBV in situ hybridisation shows strong nuclear positivity in tumour cells (×400)