Left: Two discrete benign ulcers (at 6 o'clock position and a smaller ulcer at 1 o'clock) arising in the distal esophagus in a 56 year-old man with Barrett's disease.
Right: Larger, serpiginous ulceration, with mild stricture formation and bleeding, at the squamocolumnar junction in this patient with Barrett's esophagus.


Left: Extensive ulceration with severe surrounding inflammation at the squamocolumnar junction in this 79 year-old woman with Barrett's esophagus.
Right: Shallow serpiginous ulcers at and above the squamocolumnar junction in a 72 year-old man with Barrett's.