Help Longterm Betta Illness

[techstud85]

I have been trying to treat my Betta for a large swollen side and very little pooping (though he is still active and eats like a horse). The spot is very large focused to one side as well as transparent (with only a tint of yellow). This issue has been going on since a bit before New Years and it appears that treatments are not really helping much. To be honest, although he seems happy it looks like heck. Its so clear on the side I can see his internals due to the swelling (which is scary). I have noticed something new about his condition recently that is also really strange. His side that has the clear bulge is large enough that I can see through him and notice a white cauliflower like White shape inside. I am wondering if this might be some sort of parasite or something cause it looks very odd. It seems to be larger when he eats if that is any help. I also have not seen much poo as well as noticing the side seems to have some red lines in it. I have only been feeding him small amounts of freeze dried daphnia.

Here is what treatments he's currently on:
1) kanaplex (halfway through a second round) - external treatment.
2) 6 tsp of Epsom salt for the 5 gallon tank.
3) tank contains an Indian almond leaf as well.

What it started as:
http://s2.postimage.org/4a2jg6psp/image.jpg

What it looks like now (for last few weeks):
http://i49.tinypic.com/2mqs1ld.jpg

Anyone ever see something like this and treat it?