Synchronous early gastric and intestinal mucosa-associated lymphoid tissue lymphoma in a Helicobacter pylori-negative patient: A case report

Figure 2 Immunohistochemical results of the gastric mucosa-associated lymphoid tissue lymphoma. A: Hematoxylin-eosin staining of extensive lymphocytic infiltration (200×); B: Immunohistochemistry showed that the lymphoid cells were diffusely positive for CD20 (400×); C: CD21 showed expansion and destruction of follicular dendritic cells (400×); D: Immunohistochemical stains showed CD3 negative (100×); E: CD10 was negative (100×); F: Bcl-6 was negative (100×).