Jejunal adenocarcinoma in congenital heterotopic gastric mucosa.

We describe an adenocarcinoma of the jejunum that developed in congenital heterotopic gastric mucosa, a rare event. In our patient, the absence of other intestinal malformation and the presence of gastric glands with variable grades of dysplasia, together with the histological pattern of the tumor, strongly favor the possible origin of the neoplasia from the heterotopic gastric glands, rather than from intestinal ones.