Plasmacytoid T cells in a case of lymphocytic infiltration of skin. A component of the skin-associated lymphoid tissue?
A case of cutaneous lymphocytic infiltration with large numbers of plasmacytoid T cells (PTC) is reported. Lectin staining and immunohistological analysis revealed that PTC and cutaneous dendritic cells showed a similar expression of concanavalin A, LN2, and MT1. Moreover, differences in TAL 1B5 and S-100 expression were noted. From these findings we suggest that PTC may occur in the skin as a component of the skin-associated lymphoid tissue.
Facchetti
F
F
Department of Pathology, Catholic University of Leuven, Belgium.
De Wolf-Peeters
C
C
Van den Oord
J J
JJ
Desmet
V J
VJ
D000328:Adult; D000911:Antibodies, Monoclonal; D003208:Concanavalin A / Q000378:metabolism; D003713:Dendritic Cells / Q000473:pathology; D006801:Humans; D006965:Hyperplasia; D008221:Lymphoid Tissue / Q000473:pathology*; D008297:Male; D010950:Plasma Cells / Q000473:pathology; D012867:Skin / Q000378:metabolism / Q000473:pathology*; D013601:T-Lymphocytes / Q000473:pathology*
D000911:Antibodies, Monoclonal; D003208:Concanavalin A