CD 19 positive, CD 22 positive, CD103 positive monoclonal B-cells with bright kappa positivity were found to comprise 60% of the peripheral blood lymphoid cells on flow cytometric analysis in a 55 year old man with massive splenomegaly and a total leucocyte count of 3.3 × 109/L. Which one of the following is the most likely diagnosis?
Splenic lymphoma with villous lymphocytes
Mantle cell lymphoma
B-cell prolymphocytic leukemia
Hairy cell leukemia