Who Classification Of Skin Tumours Here

: A dedicated new section covers epithelial tumours derived specifically from the nail bed.

The (5th Edition, 2025) is the authoritative global standard for diagnosing and categorizing cutaneous neoplasms. Also known as the "Blue Books," this edition shifts toward a more integrated, multidisciplinary approach that combines traditional histopathology with advanced molecular genetics and immunohistochemistry. Key Structural & Conceptual Changes WHO Classification of Skin Tumours

: Continues to be categorized separately from traditional SCC. 3. New Sections & Provisional Entities : A dedicated new section covers epithelial tumours