how many types of CD5 negative and CD10 negative small b cell lymphoma

There are several types of CD5 and CD10 negative small B cell lymphomas. Some of them include:

1. Splenic marginal zone lymphoma
2. Lymphoplasmacytic lymphoma/Waldenstrom macroglobulinemia
3. Hairy cell leukemia (variant)
4. Follicular lymphoma (rarely)
5. Chronic lymphocytic leukemia (rarely)

It is important to note that the diagnosis of these lymphomas requires a combination of clinical, morphological, and immunophenotypic features. Therefore, a definitive diagnosis can only be made by a hematopathologist after careful evaluation of the patient's clinical presentation, laboratory results, and biopsy findings