Abstract
Celiac disease (CD) is associated with marked mononuclear cell inflammation in the small intestinal mucosa. This study was performed to evaluate analogous changes in the gastric and esophageal mucosa of pediatric patients with CD, with emphasis on epithelial lymphocytosis. We evaluated intraepithelial lymphocytes (IELs) in 23 gastric (no.IELs/100 epithelial cells) and 14 esophageal mucosal biopsy specimens (IELs/hpf) from 23 pediatric cases of CD and 10 nonceliac matched controls. Four patients had postgluten withdrawal biopsy specimens reviewed, and one of these had further postgluten challenge biopsy specimens evaluated as well. Gastric specimens from the CD cases showed a significantly increased IEL count (20.5 +/- 14.4; range, 4-50) compared to controls (3.4 +/- 1.9; range, 1-8; p < 0.001), which also correlated directly with the histologic severity of the small intestinal disease as assessed by the degree of villous shortening. Sixteen (69.5%) of 23 gastric specimens showed > 8 IELs, which was the highest value obtained in control specimens. The four posttreatment specimens showed a significant reduction in the gastric IEL counts from a mean of 19.8 to 3.5 IELs/100 epithelial cells (p < 0.001). The single case that had a further postgluten challenge biopsy showed a return to the pregluten withdrawal IEL count. However, the degree of gastric intraepithelial lymphocytosis did not correlate with any of the clinical data, such as age, gender, presenting symptoms, or serum antibody levels (antigliadin, antireticulin, or antiendomysium). Furthermore, no differences were observed in the IEL count in CD esophageal specimens (5.3 +/- 2.6; range, 2-10) compared to controls (5.2 +/- 1.5; range, 3-8; p = 0.935). These findings suggest that an immune-mediated lymphocytic response linked to gluten occurs in the gastric epithelium, similar to that seen in the small intestine of pediatric patients with CD. Therefore, gastric intraepithelial lymphocytosis may represent a concurrent manifestation of CD rather than a separate entity in the pediatric population.
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