False about Barrett's oesophagus is
Barrett's ulcer is an ulcer in the columnar-lined poion of Barrett's oesophagus.These are distinct from the more usual erosions of reflux oesophagitis that always occur at or just above the squamocolumnar junction.
In sho - segment Barrett's there is less than 3 cm of columnar epithelium
Barrett's ulcer occurs just above the squamocolumnar junction
If a peptic stricture occurs in Barrett's oesophagus it always occurs at the new squamocolumnar junction
It is a premalignant condition
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