Irregular Thickened Folds

Diffuse

•          Amyloidosis

•           Hystoplasmosis

•           Mastocytosis

•           Lymphangiectasis

•           Waldenströms macroglobulinemia (IgM)

•           Alpha chain disease (IgA)

•           Graft-versus-host disease

•           Lymphoma

Proximal (duodenum & jejunum)

•           Giardiasis, strongyloidiasis

•           Eosinophilic enteritis

•           Whipple’s disease

•           Abetalipoproteinemia

•           Cystic fibrosis (mucoviscidosis)

•           Sprue

•           Lymphoma arising in celiac disease

Distal (ileum predominantly)

•           Lymphoma

•           Crohn disease

•           Tuberculosis

•           Yersinia

•           Typhoid fever (Salmonella)

•           Campylobacteriosis

•           Cystic fibrosis (mucoviscidosis)