FIGURE 1 | Modern Pathology

FIGURE 1

From: API2-MALT1 Fusion Gene in Colorectal Lymphoma

FIGURE 1

Histology of MALT lymphoma and diffuse large B-cell lymphoma of the colon and rectum. A and B, histology of the API2-MALT1–positive MALT lymphoma of the colon. C, histology of the API2-MALT1–negative MALT lymphoma of the colon. D, plasmacytoid differentiation of the API2-MALT1–negative MALT lymphoma (arrowhead, Dutcher body). E and F, histology of the API2-MALT1–positive diffuse large B-cell lymphoma with low-grade MALT lymphoma component (Case 8 in Fig. 3). E is large-cell component and F is low-grade component. Note numerous mitotic figures in E (arrowheads) that are hardly seen in F.

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