Angioimmunoblastic T-cell lymphoma (AITL, sometimes misspelled AILT) (formerly known as “angioimmunoblastic lymphadenopathy with dysproteinemia”: 747) is a mature T-cell lymphoma of blood or lymph vessel immunoblasts characterized by a polymorphous lymph node infiltrate showing a marked increase in follicular dendritic cells (FDCs) and high endothelial venules (HEVs) and systemic involvement.
https://en.wikipedia.org/wiki/Angioimmunoblastic_T-cell_lymphoma

