I mentioned this in another thread, but: from an FB, I had a squad of soldiers who were afflicted with advanced rot on every area exposed to the surface, pretty much. Eyelids, ears, nose, lips, as well as every arm and leg, every finger and toe, all the skin, fat, and muscle... they were rotten all the way through to the bone.
Out of around seven victims, two survived, after surgery was successful. I believe the others would have also, if I could have gotten them treated faster, but my medical facilities were not only overtaxed, the hospital was impossible to properly manage due to the miasma filling it (and, shortly after, the the rest of my fortress due to some afflicted pets). They walked off before I could operate, except for those two.
The survivors... well, let's just say the list of scars is extensive (I guess it would be, after all the rotting flesh being removed, they are little more than shambling husks of their former selves), and they are blind. After recovering, they went back to their normal lives, and (after one tantrum and jail sentence) were indeed quite happy and comfortable doing about their affairs. After being cared for in the comfy jail and enjoying some quiet time, the tantruming dwarf is actually quite ecstatic. I guess he got out of the army, didn't he? (Not for long, I redrafted him. Wohhh wohhhhhh!)
I dropped that fortress for awhile after the rot started to spread. Need to get it going again sometime. I didn't abandon.