TRGC1 and lymphoma: According to previous reports, clonal rearrangements of TCRγ and IgH were detected in 75%‐90% or 25%‐30% of cases with AITL.19 Therefore, based on our finding, younger patients with AITL had a lower rate of clonal rearrangements of TCRγ and IgH. This finding evoked in us the historical issue of AITL, if this disease should be regarded as either of lymphoma or atypical reactive lesion.