Fig. 3

Microscopic pathological findings. e, f or h, i are serial sections, respectively. a Poorly differentiated adenocarcinoma, non-solid type in the lesion A. b Tubular adenocarcinoma, well differentiated in the lesion B. c Tubular adenocarcinoma, moderately differentiated in the lesion C. d–i MALT lymphoma in the d–f stomach or g–i duodenum indicated by the green or purple frame in Fig. 3. MALT lymphoma cells diffusely proliferate with (e, h) lymphoepithelial lesions highlighted by f, i CAM5.2. Original magnification, a–c, e–f, h, i: ×400; d, g: ×20