Fig. 3From: Pure intravascular recurrence of CD5-positive diffuse large B-cell lymphoma primarily arising from the nasal cavitiesa Histology of random skin biopsy showing atypical cells within the lumens of the small blood vessels (hematoxylin and eosin staining, × 100 × 400). The malignant cells were morphologically similar to the cells of the primary tumor and expressed CD5 (b) and PAX5 (c) but not CD20 (d) (× 400)Back to article page