Graph showing Kaplan-Meier survival estimates, given by hematologic stage in erythrodermic CTCL.
Comparison of Kaplan-Meier survival estimates in patients with different hematologic stages of disease (H0-H4): (1) H0 stage is no evidence of blood involvement; (2) H1 stage is a T-cell clone identified by PCR analysis of the T-cell receptor gene and less than 5% Sézary cells on a peripheral blood smear; (3) H2 stage is a T-cell clone identified by Southern blot analysis or a clone by PCR and more than 5% Sézary cells; (4) H3 stage is an absolute Sézary count of greater than 1 × 109 cells per liter; and (5) H4 stage is an absolute Sézary count of greater than 10 × 109 cells per liter. Graphs were truncated at 10 years due to little available data after this time.
