Vinorelbine for Recurrent ACLC

Inclusion Criteria: Children and adolescents with a clear diagnosis of recurrent / progressive ALCL at Shanghai Children's Medical Center or other centers since September 2017 include: * Diagnosed as ALCL, already received first-line treatment, but get disease progression; * After receiving ALCL treatment has got CR then diagnosed relapse, need for pathological diagnosis. Exclusion Criteria: * Patients with other systemic diseases, severe infections or critically illness.