Classify blood involvement in Sezary syndrome: B0 (<5% atypical lymphocytes), B1 (>5% or Sezary cells by morphology), B2 (>=1000/uL Sezary cells or CD4:CD8 >=10 or CD4+CD26- >=30%).
Enter the values for the scenario you are assessing. Classify blood involvement in Sezary syndrome: B0 (<5% atypical lymphocytes), B1 (>5% or Sezary cells by morphology), B2 (>=1000/uL Sezary cells or CD4:CD8 >=10 or CD4+CD26- >=30%). Use the sezary blood involvement result to inform your calculation.