title: Duplication cyst of the stomach presenting as pyloric obstruction.
mesh_terms: D002675:Child, Preschool; D003560:Cysts / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D011707:Pyloric Stenosis / Q000175:diagnosis*; D011708:Pylorus / Q000002:abnormalities*; D013272:Stomach Diseases / Q000175:diagnosis*