Adenolymphoma: an immunohistochemical study with monoclonal antibodies against lymphocyte antigens.

Twenty-two adenolymphomas (Warthin's tumours) were investigated with respect to their lymphoid stroma; 4 were analyzed by monoclonal antibodies against B-cells and T-cells. A slight predominance of B-cells was found. In the T-cell fraction, the T-helper cells outnumbered the T-suppressor cells by a factor of 4. These and other cell types were found in the stroma and in the epithelium. Mast cells were associated with those adenolymphomas having a high proportion of epithelium.