Impact of Volumetric Burden of Metastatic Lesions on Outcomes in Extracranial Oligometastatic Patients: A Multi-Institutional Study

Purpose/Objective(s)The definition of oligometastatic (OM) disease has largely focused on the number of metastatic lesions. Here, we investigate the total volumetric burden of metastases at initial OM presentation as an independent prognostic factor for distant progression free survival (DPFS), widespread progression (WSP, i.e., > 5 new lesions), and overall survival (OS) in patients treated with SBRT.Materials/MethodsPatients with...