Mixed hyperplastic and adenomatous polyp arising from ectopic gastric mucosa of the duodenum
Russin, V.; Krevsky, B.; Caroline, D.F.; Tang, C.K.; Ming, S.C.
Archives of Pathology and Laboratory Medicine 110(6): 556-558
1986
ISSN/ISBN: 0003-9985 PMID: 3754729 Document Number: 277476
We report an unusual case of a polyp arising from ectopic gastric mucosa in the duodenum. The polyp demonstrated both hyperplastic and adenomatous proliferation. Adenomatous proliferation in a duodenal polyp arising from ectopic gastric mucosa is, to our knowledge, unique. The areas of adenomatous change were morphologically indistinguishable from those of adenomatous polyps arising in the stomach; hence, the adenomatous change observed in this polyp was regarded as a neoplastic process.