Table 1

Histological findings in endoscopic biopsies from Barrett's oesophagus

*Intramucosal adenocarcinoma denotes unequivocal breach of the gland basement membrane but not the muscularis mucosae.
1. Negative for dysplasia
2. Indefinite/low grade dysplasia
3. High grade dysplasia/in situ adenocarcinoma
4. Intramucosal adenocarcinoma*
5. Adenocarcinoma extending into the submucosa