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  • Title: The small intestine in dermatitis herpetiformis.
    Author: Fry L, Seah PP, Harper PG, Hoffbrand AV, McMinn RM.
    Journal: J Clin Pathol; 1974 Oct; 27(10):817-24. PubMed ID: 4426977.
    Abstract:
    Small intestinal biopsies from 43 patients with dermatitis herpetiformis have been studied. The diagnosis of dermatitis herpetiformis was made on clinical and histological criteria and the presence of IgA deposits in the uninvolved skin. The macroscopic appearance of the intestinal biopsy was flat in 13, convoluted in 10, leaves only in eight, and fingers and leaves in 12. Twenty small intestinal biopsies from patients who did not have dermatitis herpetiformis or gastrointestinal disorder showed leaves only in three and fingers and leaves in 17. The mean total lymphocyte count per 1000 epithelial cells for this control group was 159 +/- SE 13; for the dermatitis herpetiformis patients with flat biopsies it was 464 +/- SE 27; for the convoluted biopsies 365 +/- SE 59; for leaves only 535 +/- SE 39; and for the fingers and leaves biopsies 301 +/- SE 31. The counts for all four groups are significantly greater than the control group (P < 0.001). Three of the 43 patients with dermatitis herpetiformis had lymphocyte counts below 200 per 1000 epithelial cells, and four of our controls had counts greater than 200 but none above 300. In the control group the mean counts for lymphocytes per 1000 epithelial cells in the basal position of the intestinal epithelium was 79 +/- SE 8; in the dermatitis herpetiformis flat biopsies it was 89 +/- SE 11; for the convoluted biopsies 93 +/- SE 12; for the leaves only biopsies 121 +/- SE 18 and for the fingers and leaves 98 +/- SE 13. However, the mean lymphocyte count in the perinuclear position was 81 +/- SE 7 for the controls, 362 +/- SE 23 for the flat dermatitis herpetiformis biopsies; 251 +/- SE 46 for the convoluted specimens; 402 +/- SE 43 for the leaves only specimens, and 195 +/- SE 25 for the fingers and leaves biopsies. The mean lymphocyte count for the supranuclear position was 0.55 +/- SE 0.22 for the control group; 13.7 +/- SE 2.3 for the flat dermatitis herpetiformis biopsies; 20.0 +/- SE 6.9 for the convoluted biopsies; 14.5 +/- SE 3.3 for the leaves only biopsies; and 8.3 +/- SE 2.6 for the fingers and leaves biopsies. Thus in gluten-sensitive enteropathy the increase in lymphocytes in the intestinal epithelium is in the perinuclear and supranuclear position. The ratio of basal lymphocytes to peri- and supranuclear lymphocytes appears to be 1:1 in normal intestinal epithelium, but approximately 1:4 in the gluten-sensitive enteropathy of dermatitis herpetiformis.
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