History and Genesis of the EORTC/WHO Lymphoma classification -- Beyond the routine processing: immunohistochemistry, in situ hybridization and genetic analysis -- Mycosis fungoides -- MF variants and subtypes -- Folliculotropic MF -- Pagetoid reticulosis -- Granulomatous slack skin -- Sézary syndrome -- Adult T-cell leukemia/lymphoma -- Primary cutaneous CD30+ lymphoproliferative disorders -- Primary cutaneous anaplastic large cell lymphoma -- Lymphomatoid papulosis -- Subcutaneous panniculitis-like T-cell lymphoma -- Extranodal NK/T-cell lymphoma, nasal type -- Primary cutaneous peripheral T-cell lymphoma, rare subtypes -- Primary cutaneous CD8-positive aggressive epidermotropic cytotoxic T-cell lymphoma -- Primary cutaneous gamma-delta T-cell lymphoma -- Primary cutaneous CD4-positive small/medium T-cell lymphoma -- Extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT) -- Primary cutaneous follicle centre lymphoma -- Primary cutaneous diffuse large B-cell lymphoma, leg type -- Intravascular large B-cell lymphoma -- Blastic Plasmacytoid Dendritic Cell Neoplasm -- Clinical mimics of T cell lymphomas -- Clinical mimics of B cell lymphomas -- Histopathologic mimics of cutaneous T cell lymphoma -- Histopathologic mimics of cutaneous B cell lymphoma -- Glossary.