Who Classification — Of Skin Tumours

: "Primary cutaneous NUT (Nuclear protein in testis) carcinoma" is included as a new provisional entity. 4. Adnexal & Soft Tissue Tumours

Detailed information and purchasing options for the full volume are available through the IARC Publications or Amazon . WHO Classification of Skin 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). : "Primary cutaneous NUT (Nuclear protein in testis)

: The classification reaffirms the 9-pathway model for melanoma, which classifies lesions based on sun exposure (UV damage), anatomical site (e.g., acral, mucosal), and specific molecular drivers. : This term is now used for "intermediate"

: A new chapter focusing on the adverse prognostic implications of systemic cancers metastasizing to the skin.

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

: Continues to be categorized separately from traditional SCC. 3. New Sections & Provisional Entities