ERBB2 and adenocarcinoma: Biopsies confirmed a poorly differentiated adenocarcinoma, human epidermal growth factor receptor 2 (HER-2) and programmed death ligand 1 (PDL1) negative. Fluorodeoxyglucose-positron emission tomography (FDG-PET) and endoscopic ultrasound were used to complete the AJCC TNM 8th edition staging of T3N2 (peri-oesophageal and peri-gastric nodal involvement) M0.