Monoclonal gammopathies in Sézary syndrome: a report of four new cases and a review of the literature.

Clinical and laboratory findings of four patients with Sézary syndrome and monoclonal gammopathy are presented. In the literature five cases with the association of these symptoms have been reported. Among the authors' series of 13 patients with Sézary syndrome, monoclonal gammopathy was observed far more often than could be expected from its natural incidence. It appears likely that monoclonal gammopathy is related to Sézary syndrome.