: A dedicated new section covers epithelial tumours derived specifically from the nail bed.
: A new chapter focusing on the adverse prognostic implications of systemic cancers metastasizing to the skin. WHO Classification of Skin Tumours
: Significant updates were made to dendritic cell and histiocytic neoplasms, as well as T-cell and NK-cell disorders. : A dedicated new section covers epithelial tumours
: This term is now used for "intermediate" lesions that exhibit borderline biological behavior but have specific molecular signatures (e.g., BAP1 inactivation or WNT pathway alterations). BAP1 inactivation or WNT pathway alterations).