Disease expertise: the diagnosis and management of cutaneous lymphoma and related conditions, including: mycosis fungoides (MF) cutaneous T cell lymphoma (CTCL) [variants of which include folliculotropic MF, follicular mucinosis MF, hypopigmented (hypomelanotic) MF, pagetoid reticulosis (Woringer-Kolopp disease), erythrodermic MF, tumor-stage (T3) MF, transformed MF (T-MF), large cell transformation MF (LCT-MF), and Sézary syndrome (SS)]; CD30+ lymphoproliferative disorders (CD30+ LPD) including lymphomatoid papulosis (LyP) and anaplastic large cell lymphoma (ALCL); CD4+ small/medium/pleomorphic T cell lymphoma (CD4+ SMPTCL); cutaneous B cell lymphoma (CBCL) [variants of which include primary cutaneous marginal zone B cell lymphoma (PCMZBCL) and primary cutaneous follicle center B cell lymphoma (PCFLBCL); lymphocytoma cutis (pseudolymphoma); parapsorias (including large plaque and small plaque variants); subcutaneous panniculitic T cell lymphoma (SCPTCL); cutaneous CD8+ cytotoxic T cell lymphoma; cutaneous gamma-delta T cell lymphoma; and cutaneous NK/T cell lymphoma.