: Continues to be categorized separately from traditional SCC. 3. New Sections & Provisional Entities
: Each tumour entry includes clear "essential" diagnostic features and "desirable" criteria to improve diagnostic reliability worldwide. Major Clinical Updates by Category 1. Melanocytic Neoplasms WHO Classification of Skin Tumours
: The term "variant" is now reserved strictly for genetic alterations in DNA sequences, rather than being used to describe morphological subtypes. : Continues to be categorized separately from traditional
: A dedicated new section covers epithelial tumours derived specifically from the nail bed. WHO Classification of Skin Tumours