(a) Pathological findings of the resected lesion
(approximately 40 mm in diameter). Hematoxylin-eosin staining of the sections of the resected specimen revealed a moderately differentiated adenocarcinoma that extended into the submucosal layer to a depth of 2700 μ
m with mucin pools and lymphatic infiltrations (green line in Figure 3
, ×4). (b) A magnified view of the most aggressive deep infiltration site of submucosal invasion (yellow box in (a), ×40).