Heterotopic gastric mucosa occurring in the lower jejunum.
D000013:Congenital Abnormalities; D005753:Gastric Mucosa; D006801:Humans; D007583:Jejunum / Q000002:abnormalities*; D009092:Mucous Membrane / Q000002:abnormalities*
ABNORMALITIES; JEJUNUM/abnormalities; MUCOUS MEMBRANES/abnormalities