ALK and anaplastic large cell lymphoma: Feldman et al., then our team, showed that these 6p25.3 rearrangements are quite specific of CD30-positive/ALK-negative anaplastic large T-cell lymphomas (ALCL), mainly of cutaneous origin (cALCL) [9, 10, 11, 12], but also occur in transformed/tumor stage mycosis fungoides (T-MF) [11] and in rare lymphomatoid papulosis variants [13].