It should not be esophagus
it can be pharynx ,as --
Bleeding in ears and esophageal thickening are different issues .esophagus id bit down to cause ear bleeding.
You must see whether your father has any problem in swallowing , then there are chances of the food pipe ie esophagus disease.
Thickening means that the wall is thickened it could be because of long term irritation or else could be some growth etc.
You should talk to your doctor as it is difficult to comment without seeing the reports .