Fig. 2From: Pure intravascular recurrence of CD5-positive diffuse large B-cell lymphoma primarily arising from the nasal cavitiesa Histology of the tumor in the nasal cavity. The neoplastic cells have large and round nuclei (hematoxylin and eosin staining, original magnification, × 400). The malignant cells mostly had a immunoblastic or centoblastic appearance and expressed CD20 (b) and CD5 (c) but not CD3 (d) (× 400)Back to article page