9767/1 Angioimmunoblastic lymphadenopathy


Definitions

Tumours of haematopoietic and lymphoid tissues
ICD-O-3 topography code: C42 and C77

This diagnostic term is not contained in the 2008 WHO Classification of Tumours of Haematopoietic and Lymphoid Tissues 1
 
Swerdlow SH, Campo E, Harris NL, Jaffe ES, Pileri SA, Stein H, Thiele J, Vardiman JW (Eds.)
WHO Classification of Tumours of Haematopoietic and Lymphoid Tissues
4th Edition
International Agency for Research on Cancer: Lyon 2008



. It was once used to describe a disease that had some features in common with angioimmunoblastic T-cell lymphoma, (AITL) but was felt to be a benign, non-neoplastic variant. The term is no longer used. If dealing with lymphoma, the term AITL should be used. For benign conditions the appropriate form of reactive hyperplasia should be diagnosed, e.g., paracortical hyperplasia. Histological features similar to AITL can be seen in some hypersensitivity reactions, and some cases of angioimmunoblastic lymphadenopathy likely represented drug reactions.