Who Classification Of Skin Tumours Direct

: Each tumour entry includes clear "essential" diagnostic features and "desirable" criteria to improve diagnostic reliability worldwide. Major Clinical Updates by Category 1. Melanocytic Neoplasms

: The term "variant" is now reserved strictly for genetic alterations in DNA sequences, rather than being used to describe morphological subtypes. WHO Classification of Skin Tumours

: Significant updates were made to dendritic cell and histiocytic neoplasms, as well as T-cell and NK-cell disorders. : Each tumour entry includes clear "essential" diagnostic

: Progress in identifying gene fusions (e.g., YAP1::MAML2 in poromas) has enhanced diagnostic accuracy for sweat gland and hair follicle tumours. 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