Unusual case of B cell lymphoma after immunosuppressive treatment for psoriasis

Figure 1 Liver biopsy with heavy lymphocytes infiltrate in portal tract (A, × 100) and gastric mucosa with diffuse infiltrate with scattered large neoplastic cells (B, × 200) positive to CD20 (C, × 100).

Figure 2 Second liver biopsy with diffuse mononuclear infiltrate (A, × 100) composed of predominantly small T lymphocytes (B, × 100) and histiocytes (C, × 200) with scattered large neoplastic B cells (CD20⁺) (D, × 400).

Figure 3 Granulomas of the spleen (A, × 100) composed of clusters of epithelioid histiocytes, small lymphocytes and large B cells (B, × 40).