Abstract
Background: Although duodenal adenomas are very common in familial adenomatous polyposis, we wished to emphasize our experience with finding nonpolypoid adenomas in the duodenum of patients with this disease. Methods: Duodenoscopy was performed in 23 patients with an established diagnosis of familial adenomatous polyposis or Gardner's syndrome. Results: Endoscopy revealed single or multiple nonpolypoid adenomas of the duodenum in 7 patients (30%). The lesions were smaller than 5 mm and were endoscopically recognized as flat or depressed reddish lesions; one lesion was completely flat and the remaining lesions were flat-topped elevations with a central depression. All of the lesions were histologically diagnosed as tubular adenoma with moderate epithelial atypia. Conclusion: These findings suggest that duodenal nonpolypoid adenomas are common in familial adenomatous polyposis or Gardner's syndrome and that careful surveillance endoscopy seems necessary in patients with this disease. (Gastrointest Endosc 1996;44:305-8.)
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