NCIt related terms : TERTIARY LYMPHOID STRUCTURES; TLS;
NCIt definition : Ectopic lymphoid formations in nonlymphoid tissues. They resemble lymph nodes and
can contain B-cell-rich follicles with germinal centers, T-cell-rich interfollicular
areas, and high endothelial venules. Causes include persistent infections, autoimmune
disorders, and cancer.;
Alternative definition : CDISC: The formation of follicular structures, preferably with some germinal center
development, with distinct high endothelial venules (HEVs) and inflammation in an
atypical location. (INHAND);