Heterotopic submucosal gastric cysts: Report of two cases, one in association with carcinoma.

Two cases of heterotopic submucosal gastric cysts, one with a coexisting superficial spreading carcinoma, are described. This is an uncommon entity with which radiologists should be familiar. An association between such cysts and carcinoma has been predicated previously. The induction of submucosal gastric cysts in monkeys fed polychlorinated biphenyls is cited, and the potential significance of this observation with regard to such lesions in humans is discussed.