TNFRSF8 and Lymphomatoid Papulosis: Among malignancies, CD30-positive T-cells typically characterize lymphomatoid papulosis (LyP) and primary cutaneous anaplastic large cell lymphoma (cALCL) [1,36], whereas in B-cell neoplasms CD30-positive cells are less common, occurring in the setting of iatrogenic immunosuppression (i.e., mucocutaneous ulcers) [1,37], and in primary cutaneous diffuse large B-cell lymphomas (DLBCL) [38].