In a previous study of adenoid tissue from allergic and non-allergic p
atients, we concluded that in allergic children edema of the ''chorium
'' was present in 80.4% and that treatment with antihistamine drugs ma
y reduce this edema. The purpose of the present study was to compare t
he histopathology of the palatine tonsil and adenoid from allergic pat
ients. Tissue samples were obtained from 153 patients (56 tonsils and
97 adenoids from allergic children). We analysed the intensity of the
edema and its cellular components in the chorium of palatine tonsils a
nd adenoids. The frequently seen edema in the adenoids was significant
ly different from that in the tonsils. The squamous epithelium of the
tonsils was thicker and had stronger intercellular junctions than the
columnar epithelium of the adenoids. This fact probably makes difficul
t the contact of the antigen with the chorium.