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Can Paneth cell metaplasia in cecum indicate the presence of colorectal epithelial neoplasia?

The main purpose of the present study was to investigate the relationship between the incidence of Paneth cells in cecal mucosa and the incidence of colorectal epithelial neoplasias. Using endoscopic biopsy specimens, obtained from cecum of 375 subjects in cases of total colonoscopy, we examined the incidence of Paneth cells in the cecal mucosa. In the present study, Paneth cells were present in the human cecal mucosa (47.7%, 179/375 subjects) regardless of age. Paneth cells were found more frequently in the subjects with colorectal epithelial neoplasia (57.3%, 90/157 subjects) than in the subjects without colorectal epithelial neoplasia (40.8%, 89/218 subjects) (p<0.01, chi(2) test). Our results suggest that the incidence of Paneth cells in cecal mucosa indicate some changes in the environment with tumorigenesis of the colorectal region according to the function of Paneth cells, proposed by other investigators.