Fig. 2 | Modern Pathology

Fig. 2

From: Clinicopathologic and molecular features in hairy cell leukemia-variant: single institutional experience

Fig. 2

Bone marrow trephine biopsy showing involvement by hairy cell leukemia-variant with predominant interstitial pattern (a hematoxylin and eosin, ×200), highlighted by CD20 and DBA.44 (b, c immunohistochemistry, ×200). Bone marrow involvement by hairy cell leukemia-variant with sinusoidal pattern which is difficult to appreciate on routine staining (d hematoxylin and eosin, ×200). Lymphoma cells form clusters in the sinusoids (arrowhead) highlighted by PAX5 (e immunohistochemistry, ×200). High-power of sinusoidal involvement highlighted by PAX5 (inset) (f hematoxylin and eosin, ×1000)

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