Sezary SyndromeMycosis FungoidesLymphoma, T-Cell, CutaneousDermatitis, ExfoliativeSkin NeoplasmsSyndromeReceptors, KIR3DL2Antigens, CD7Receptors, KIR2DL2PhotopheresisDipeptidyl Peptidase 4T-LymphocytesLymphatic DiseasesLysosomal-Associated Membrane Protein 3ImmunophenotypingSkinPUVA TherapyPentostatinFlow CytometryPruritusGene Rearrangement, beta-Chain T-Cell Antigen ReceptorLymphoma, T-CellNeoplastic Cells, Circulating