11 years, that's great! Being told you had cancer around your heart must have been terrifying.
He passed from other causes 5 years after being cured of the cancer. The thing is, the cure made him miserable. Removal of the esophagus, which is standard for localized esophageal, has a 20%(!) mortality risk. What they do is after removing the esophagus, they stretch your stomach upwards and attach it to your throat, leaving you with effectively no stomach. They then cut the sphincter between what is left of your stomach and your intestines to allow food to flow through and be digested in the intestines. Kind of like a radical form of the gastric bypass that people sometimes get to lose weight.
Afterwards, if he ate a portion as large as a side of mash potatoes, he felt ill like a normal person would have after eating an entire large pizza in one sitting. He was constantly nauseous and weighed under 100 lbs by the time he passed.
I seem to have inherited the underlying condition which caused his cancer, which is GERD, a condition causing stomach acid to migrate to the esophagus, causing chronic heartburn. I'll be fine so long as I take PPI acid controllers (omeprazole) daily for the rest of my life. My dad didn't start the meds until much later because it wasn't invented until the late 80's after he already had the acid eroding his esophagus for decades.