| Lymphoma cells in vessels | ||
 H&E stain |
 H&E stain |
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 H&E stain |
Large neoplastic B-cells in small & intermediate sized vessels
 H&E stain |
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 NADH stain Hemosiderin (Brown) in connective tissue
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 Acid phosphatase stain Positive staining cells in vessel walls
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 Intravascular cells in endoneurium stain for Leukocyte common antigen  Vessel walls stain for Ulex lectin |
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 CD20 stain From: A Perry CD20+ cells in vessels & connective tissue
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 CD20 stain CD20+ cells in vessel lumen
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 CD20 stain CD20+ cells in vessel walls
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