Meckel's diverticulum: invagination causing recurrent ileal obstruction.
D003937:Diagnosis, Differential; D006801:Humans; D007082:Ileum / Q000601:surgery; D007443:Intussusception / Q000209:etiology*; D008297:Male; D008467:Meckel Diverticulum / Q000175:diagnosis* / Q000601:surgery*; D008875:Middle Aged; D011859:Radiography