Inflammatory cell count and identification in chronic non specific duodenitis.

The authors studied the count and identification of inflammatory cells in biopsies of chronic non specific duodenitis. In superficial and atrophic duodenitis there is an increase of lymphocytes in the epithelial layer and a rich population of plasmacells in the lamina propria. In interstitial duodenitis the intraepithelial lymphocytes are increased; in the lamina propria there is a zonal cellular increase constituted by lymphocytes.