The length of negative proximal resection margin does not significantly influence on the prognosis of Siewert type II adenocarcinoma of esophagogastric junction with or without neoadjuvant chemotherapy

A positive status of PRM appears to be associated with adverse survival outcomes of patients with locally advanced Siewert type II AEG after surgery. However, for patients with negative status, the length of the PRM does not influence survival, regardless of whether they undergo surgical resection alone or NAC followed by surgery.