Adenocarcinoma of the duodenum arising in a villous adenoma

Duodenal villous adenomas are premalignant lesions. Prior to malignant transformation, their appearance on upper gastrointestinal examination is often characteristic. Following malignant change, the final diagnosis frequently requires tissue.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/48143/1/261_2005_Article_BF02256519.pd