Two cases each of peripheral T-cell lymphoma not otherwise specified and extranodal NK/T-cell lymphomas and one case each of ALK-positive anaplastic large cell lymphoma, ALK-negative anaplastic large cell lymphoma, monomorphic epitheliotropic T-cell lymphoma, and enteropathy-associated intestinal T-cell lymphoma (EATL) were identified. This evidence concerns the gene ALK and extranodal nasal NK/T cell lymphoma.