Who Classification Of Skin Tumours May 2026

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: 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. This is for informational purposes only

Detailed information and purchasing options for the full volume are available through the IARC Publications or Amazon . Learn more : Each tumour entry includes clear

: Significant updates were made to dendritic cell and histiocytic neoplasms, as well as T-cell and NK-cell disorders.

: 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.

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