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. Author manuscript; available in PMC: 2020 May 28.
Published in final edited form as: Medicine (Abingdon). 2019 Apr 3;47(5):275–285. doi: 10.1016/j.mpmed.2019.02.005

Figure 1.

Figure 1

Endoscopic appearance of BO. The transition between the pale pink squamous oesophagus and the darker columnar metaplasia that has replaced it in the lower oesophagus can easily be detected endoscopically.