My heart goes out to your father. I have never heard of this happening. Do they give him any hope of the condition clearing itself up over time? I am surprised they sent him home with all of that extra fluid to begin with. My prayers will be with him that God will intervene in his life and heal this pain.
Yes, releasing him with all that fluid was a bad move. Prior to the onset of the fluid he had breezed through the surgery.
They give him hope in that they say it is possible for enough scar tissue to grow to fill in the cavity. Of course, that is very "hopeful" and could take many years but with all of these wonderful prayers it is possible.