Overview of guideline recommendations for the management of high-risk and advanced cutaneous squamous cell carcinoma.

Cutaneous squamous cell carcinoma (cSCC) is the second most common form of skin cancer. National and international associations have issued evidence- and consensus-based guidelines to offer clinicians a framework to optimally manage patients with invasive cSCC. Current updated guidelines regarding the recommendations on the management of patients with high-risk and advanced cSCC include EDF/EADO (European) Guidelines 2020, US National Comprehensive Cancer Network guidelines 2021, American Academy of Dermatology guidelines 2018, British Association of Dermatology guidelines 2020 and German guidelines 2020. This review presents the guideline recommendations on the definition of high-risk and advanced cSCC, surgical treatment and safety margins, definitive and adjuvant radiotherapy and systemic treatments. The recommendations across guidelines may converge, diverge or in some cases not be able to provide a recommendation, highlighting open questions to be answered by future studies.