Risk of lymph node metastases in patients with T1b oesophageal adenocarcinoma: A retrospective single centre experience

Figure 1 Superficially invasive T1b oesophageal adenocarcinoma. A: Low power overview of the lesion. A moderately differentiated oesophageal adenocarcinoma is located at the squamocolumnar junction. This is a piecemeal excision of this lesion. The deep margin is clear (R0). There was no lymphovascular invasion or poor differentiation. Boxed area shown in B. B: High power of the invasive front showing a tumour gland just penetrating the original muscularis mucosae (asterisk).