Immunoglobulin G4-related pancreatitis presenting as an obstructive pancreatic mass in a Latino male

Abstract Immunoglobulin G4-related disease (IgG4-RD) is a localized or diffuse autoimmune fibro-inflammatory condition that can affect any organ. The literature is sparse on IgG4-RD in the Latino population. This is a case report of a Latino male diagnosed with IgG4-related pancreatitis presenting as a mass. Our 40-year-old Latino male patient presented with diarrhea and epigastric discomfort progressing to jaundice and pruritus. He had associated elevations in liver enzymes, antinuclear antibody, and IgG4. Magnetic resonance cholangiopancreatography revealed a lobulated pancreatic head