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Nodular and beginning diffuse infiltration by chronic lymphatic leukemia (infiltration volume 80%).
Bone Marrow
70 years
70-year old male patient with a CLL diagnosed 4 months ago. Bone marrow biopsy was performed before starting treatment due to B-symptoms and symptomatic lymphadenopathy.
The neoplastic lymphoid cells show expression of CD23.
Staining for cyclin D1 was negative.
Expression of CD23 is a typical finding in CLL.
Philippe Brunner, University of Basel
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