Oligometastatic disease in esophagogastric cancer: an update of recommendations on definition, diagnosis, and treatment

Abstract

Oligometastatic cancer is characterized by the presence of a restricted number of metastatic lesions extending beyond the primary tumor. Until recently, there was a significant lack of agreement concerning the precise definition and optimal treatment strategies for oligometastatic cancer in the context of esophageal or gastric malignancies. Here we provide an overview of the OligoMetastatic Esophagogastric Cancer (OMEC) project which was initiated to develop a multidisciplinary European consensus statement for the definition, diagnosis, and treatment of oligometastatic esophagogastric cancer. Additionally, we provide an updated systematic review of published and ongoing clinical studies on local metastasis-directed treatment of oligometastatic esophagogastric cancer.