Disease-Free Survival for Patients with Thin Melanomas according to the American Joint Committee on Cancer 8th Edition.

Background: The recently implemented AJCC 8th edition TNM staging system for malignant melanoma (MM) changed the definition for T1a and T1b tumours.

Objectives: To analyse differences in disease-free survival (DFS) among patients with thin MM staged according to both AJCC 7th and 8th editions.

Methods: An observational study including 285 patients with cutaneous thin MM (thickness ≤1 mm).

Melanoma: diagnosis, staging, and treatment. Consensus group recommendations.

The incidence of malignant melanoma is increasing worldwide. In Spain, its incidence is increasing faster than any other cancer type, with a 5-year survival rate of about 85%. The impact and characteristics of malignant melanoma in the Spanish population can be ascertained from the national melanoma registry of the Academia Española de Dermatología y Venereología.