Other types of mature T cell lymphomas have more specific presentations such as CD30 positive T-cell LPD (commonly seen in the skin) and anaplastic large cell lymphoma [Fig. 3] that may be ALK-positive (commonly in the lymph node) or ALK-negative (present in either the skin or lymph node) [38]. This evidence concerns the gene ALK and T-cell non-Hodgkin lymphoma.