TIA1 and neoplasm: Combined with immunohistochemical staining (cluster of differentiation 2 (CD2)+, CD3+, CD5−, CD20−, CD4−, CD8−, CD30+ most, CD56±, T-cell restricted intracellular antigen 1 (TIA-1)+, granzyme B (GrB)+, T-cell receptor αβ (TCRαβ)−, TCRγδ−, and KI-67+ >50%; Figure 3) and positive fluorescence in situ hybridization (FISH) for EBV-encoded early small ribonucleic acid (RNA) (EBER, Figure 4) both in the intestine and skin, EBV-positive T/NK-cell LPD (tumor stage) was identified.