Colonic mucosa-associated lymphoid tissue lymphoma identified by chromoendoscopy

Figure 2 Histopathologic findings. A-C: Hematoxylin-eosin staining of the biopsy specimen showing dense proliferation of atypical lymphoid cells and infiltrated centrocyte-like cells in the mucosal layer (magnification: A, 40 ×; B, 100 ×; C, 200 ×); D: CD20-positive; E: Bcl-2-positive; F: CD10-negative; G: CD23-negative; H: Bcl-6-negative immunoreactivity of the biopsy specimen (100 × magnification).