Extremely rare case of primary esophageal mucous associated lymphoid tissue lymphoma

Figure 2 Photographs from the hematoxylin and eosin stain, and immunohistochemistry staining, of the biopsy samples. A: Photomicrograph shows atypical infiltrate under the mucosa of the esophagus × 40 original magnification hematoxylin and eosin (HE) stain; B: The tumor cells are medium sized lymphocytes and have a round or slightly constricted nuclei, × 400 original magnification, HE stain; C: Immunohistochemistry: CD20, CD3, CD43, Kappa and Lambda.