ALK-positive ALCL was observed to be more likely to involve the lymph nodes than ALK-negative ALCL (84.3% vs. 55.5%, χ2 = 4.973, P = 0.043) and had more sites of positive lymph nodes (7.0 ± 4.7 vs. 3.4 ± 2.1, t = 3.247, P = 0.003). Here, ALK is linked to anaplastic large cell lymphoma.