Among mature T-cell and NK-cell lymphomas, the most prevalent lesions were MF (n = 19), followed by Sezary syndrome (SS) (n = 8), primary cutaneous aggressive epidermotropic CD8+ cytotoxic T-cell lymphoma (n = 2), and primary cutaneous anaplastic large cell lymphoma (PCALCL) (n = 1). This evidence concerns the gene CD8A and synovial sarcoma.