Evaluation of a dedicated software for semi-automated VMAT planning of spine Stereotactic Body Radiotherapy (SBRT).

Purpose: To determine whether SBRT of spinal metastasis using a dedicated treatment planning system (TPS) and delivered with a gantry-based LINAC could provide plans of similar quality to the Cyberknife technology. Additional comparison was also done with other commercial TPS used for volumetric modulated arc therapy (VMAT) planning.

Materials And Methods: Thirty Spine SBRT patients, previously treated in our institution with CyberKnife (Accuray, Sunnyvale) using Multiplan TPS, were replanned in VMAT with an dedicated TPS (Elements Spine SRS, Brainlab, Munich) and our clinical TPS (Monaco, Elekta LTD, Stockholm), using exactly the same arc geometry.

Benefit from adjuvant radiotherapy according to the number of risk factors in cutaneous squamous cell carcinoma.

Introduction: Indications of adjuvant radiotherapy (RT) for high-risk cutaneous squamous cell carcinoma (cSCC) are not clearly defined. We aimed to identify factors predicting relapse in cSCC patients treated with surgery or RT alone and to assess in which clinical setting adjuvant RT was beneficial in term of progression free survival (PFS).

Methods: This retrospective analysis included patients with resectable primary cSCC treated with surgery and/or RT in curative intent, managed at Centre Léon Bérard (Lyon, France) from April 2010 to September 2020.