Autoimmune pancreatitis presenting with IgG4-positive multiple gastric polyps

Autoimmune pancreatitis (AIP) occurs in association with a variety of multiorgan pathologies. AIP coexists most often with sclerosing cholangitis, and involvement of the lachrymal gland, salivary gland, thyroid gland, lymph nodes, and retroperitoneum has been reported, although these are less common. It has been reported that gastric ulcers are associated with AIP, even though these are actually rare. We encountered a case of IgG4-positive multiple inflammatory gastric polyps in a patient with AIP. We believe that there are no similar previous reports, so we present our findings as a case report.