Esophageal cancer is usually a metastatic colony of liver and/or lung cancer, and base on what this guy went through in the long days following the big quake I would have to say it is very likely his longevity, shall we say, was highly affected by those conditions.
Japan simply needs to restart it's working reactors, if it wants to survive its on-going economic crisis, and Fukushima is NOT contained, nor is it likely to be contained for quite some time. The technology is still being ground out, but that mother of all invention, "necessity."
Since you apparently know all about it, why don't you share the story with us? I've studied the official version pretty carefully and would like to like to be enlightened.
Esophageal cancer is almost never a metastasis from another site. Most if not all arise de novo in the esophagus