RESUMEN
The expression of some adhesion molecules of the integrin family and their ligands was investigated in skin biopsies from a patient with lymphomatoid granulomatosis (GL), who at onset presented cutaneous lesions followed by lung and brain involvement. The angiocentric and angioestructive skin infiltrate consisted mainly of T helper 'memory' cells (CD2+, CD3+, CD4+, CD5+, Cd7+, CD45RO+) with a variable expression of activation antigens (CD25-, CD38+, CD71+, HLA-DR+) and 20% Ki67 + (nearly all atypical cells). T cells highly expressed alpha3beta1 and alpha5B1 integrins, along with integrins of the beta2 family. A modification of the expression pattern in laminin and collagen IV and an increased expression of tenascin and fibronectin were also observed