So my dad 67 years old has adenocarcinoma at ge junction and enlarged retroperitoneal lymph nodes. So gastroenterologist saw and told to do biopsy after endoscopy. One of the relative told to go radiologist oncologist. So I want to know. After biopsy report should we go to gastroenterologist?? Or other doctor?? So we know few good surgical oncologist. Can surgical oncologist give medication and suggestions for treatment like chemo etc??