ALK and anaplastic large cell lymphoma: Median age of our cohort was lower and the proportion of ALCL ALK positive patients was higher compared to other series.[4] This finding may reflect the pattern of referral as our Center is the tertiary care referral center, and is accordingly similar to those reported in other report, for example in a German series of 320 patients enrolled in clinical trials median age was 50 years and 60% of the patients had a diagnosis of ALCL (41% ALK positive)[9].