| Immunologic analysis of this case was done by a commercial lab. | On the basis of positivity for CD5 and CD19 plus monoclonal light chain expression on the surface it was classified as CLL. | Surface light chain expression was much too strong for CLL. CD23 for discrimation of mantle cell lymphoma was not done. |
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| CD10 for discrimination of FL was not done. | CD20 was not done to test whether the cells are weakly positive as in CLL or strong as in other lymphomas. | The leukemic cells do not resemble CLL cells. |
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| The chromatin is not so condensed as in CLL. | Many nuclei are indented. | Possible diagnoses are: mantel cell lymphoma, marginal zone lymphoma, FL. |
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