Application of novel magnified single balloon enteroscopy for a patient with Cronkhite-Canada syndrome

Figure 4 Trans-anal single balloon enteroscopy (ileum) and histopathological findings. A: White light observation demonstrated prominent reddening of villi. Scattered white spots were also observed; B: Magnifying enteroscopy with indigo carmine contrast demonstrated irregular villus structure; C: Narrow-band imaging magnified observation demonstrated spotted reddening within villi (white arrow heads) and irregular caliber of the loop-like capillaries; D: Histopathological findings demonstrated elongated crypts and atrophied villi as well as inflammatory cell infiltrates predominantly composed of eosinophils.