Fig. 3
From: Extranodal natural killer/T-cell lymphoma presenting as hypopyon panuveitis: a case report
Histopathological reports for the lymph nodes and oral ulcer. Extranodal NK/T-cell lymphoma, nasal type. A) Angioinvasion by pleomorphic lymphoid cells. Note one blood vessel in the center with infiltration by lymphoma cells. B) Cluster of differentiation (CD) 3 positive lymphoma cells with typical cytoplasmic staining pattern. C) Occasional CD30 positive lymphoma cells (membrane staining). D) CD56 positive lymphoma cells (membrane staining). E) T-cell intracellular antigen-1 positive lymphoma cells, indicative of cytotoxic granules in the cytoplasm of the lymphoma cells. F) High proliferation index by Ki-67 in lymphoma cells (nuclear staining). G) Epstein-Barr virus-encoded small ribonucleic acid positive lymphoma cells by in situ hybridization (nuclear staining)