A Sick Dog

has anyone’s dog cured from mega-e?

I have a 4 months old dog – Arthur(metis of I don’t know what). Until
2 months he was ok, then he got sick of parvovirosis which he
overcame.After 1 week of feeling ok (and he ate solid food with no
problem) he developed mega-e (I trully think that there is a connection
between parvo and mega-e (although the vet says that there isn’t)
I am from Romania and the vets don’t know much of this desease.
Has anyone confronted this situation?
Is it possible that my dog cures from mega-e without any treatment?
(the vet says that there is nothing he can do or give Arthur for cure.

Megasophagas? Not parvo related & not a "disease". Congenital defect.
Can be surgically repaired but……big money.