I my opinion, you should seek 2nd opinions on your diagnosis, staging and treatment options. I'm a 6 yr survivor of ESCC. I was not satisfied with the initial diagnosis, staging and prognosis and proposed treatment of my disease by my initial physician. Thus, I sought 2nd opinions at MSK in NY and MD Anderson in Houston, TX. Both institutions have excellent referral services that help with scheduling your travel, accommodations as well as rapid scheduling of your physician appointments, diagnostic procedures and lab testing. The Mayo Clinic offers similar services
My initial consult with MSK resulted in a restating of Mt disease and the development of an aggressive radiotherapy and chemotherapy regimens which I underwent at my local regional cancer center with good clinical results Unfortunately, after 2 yrs of no evidence of active diseas. I suffered a relapse. I went to MD Anderson for yet another opinion re treatment of my disease. I met with the GI- oncology team, the oncologic surgery team, radiation oncology and their clinical trials group. They formulated a treatment plan for consisting of targeted radiotherapy and surgical removal of tumor/lymph nodes. Rather than undergo the procedures there in Houston, I elected to have them performed at Duke Cancer Center. I under went SBMRT radiotherapy for retroperitoneal, abdominal and pelvic nodes in January with excellent results. As I write reply, I am sitting in the surgery waiting room at Duke University Hospital awaiting to be take back for a minimally invasive thoracotomy to remove mediastinal lymph nodes.
If you medical records are kept on Epic's MyChart app, they may be shared between all the institutions that use MyChart.

Don't delay seeking a second opinion. Do it ASAP.