ALK and anaplastic large cell lymphoma: The study enrolled 12 patients, 6 with angioimmunoblastic T cell lymphoma (AITL), 3 with PTCL-NOS, and one patient each with anaplastic lymphoma kinase negative anaplastic large cell lymphoma (ALK-ALCL), enteropathy associated T cell lymphoma and hepatosplenic gamma delta T cell lymphoma.