Follow-up by GeneScan analysis in a patient with cutaneous T-cell lymphoma (case 12) by TCR-β PCR.

(A) Plaque-stage at the time of first diagnosis. (B) Lymph node involvement half year later. (C) Peripheral blood at the time of lymph node involvement. (D) Skin lesion 2 years after chemotherapy; relapse. Note: The same clonal TCR-β rearrangement (250 bp) is detectable in all tissue specimens, but not in the peripheral blood sample.