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In general, new (definitive) entities as well as tumor\u2010like lesions were included.\n                  <\/jats:p>\n                  <jats:p>Primary cutaneous B\u2010cell lymphomas (CBCL) received a thorough review. A new class\/family of cutaneous follicle center lymphomas was defined. Primary cutaneous marginal zone lymphoma is now presented as a separate entity independent from extranodal marginal zone lymphoma of mucosa\u2010associated lymphoid tissue. In primary cutaneous T\u2010cell lymphoma, former provisional entities were upgraded to definite entities. S\u00e9zary Syndrome was sorted into the class\/family of mature T\u2010cell and NK\u2010cell leukemias. Additionally, a newly formed entity of primary cutaneous peripheral T\u2010cell lymphoma, NOS was created for CTCL entities that do not fit into the already described CTCL entities.<\/jats:p>\n                  <jats:p>The increasing importance of genomic and molecular data has already been recognized in classifying leukemias and systemic lymphomas. However, in PCL the genomic landscape has not yet been fully described and validated. Therefore, future research is necessary to describe the genomic and molecular mechanisms underlying the disease entities more clearly. This would both meet a diagnostic need and valuably contribute to future classification schemes.<\/jats:p>","DOI":"10.1111\/ddg.15361","type":"journal-article","created":{"date-parts":[[2024,8,1]],"date-time":"2024-08-01T06:53:44Z","timestamp":1722495224000},"page":"1254-1265","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["The fifth edition of the WHO\u2010Classification \u2013 what is new for cutaneous lymphomas?"],"prefix":"10.1111","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6456-2681","authenticated-orcid":false,"given":"Susanne","family":"Melchers","sequence":"first","affiliation":[{"name":"Department of Dermatology Venereology and Allergology University Medical Center Mannheim\/University of Heidelberg  Mannheim Germany"},{"name":"Skin Cancer Unit German Cancer Research Center (DKFZ)  Heidelberg Germany"},{"name":"Section of Clinical and Experimental Dermatology Medical Faculty Mannheim 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