Chet, how did the deer look otherwise? Were they healthy or appear to be unfit? My dad shot a doe this year and she had a large bulge in her lower leg. She was fat and healthy but when we were skinning her dad hit that sac and a green puss flowed out. We contacted DNR and it was gangreen. It did not spread to the meat and he got his meat. Apparently the deer was shot at and never healed in that leg. We did not explore that leg any further to see if there was anything in that sac. The smell and sight was enough. Anything unusual you should report it to be safe.

Chet I think it is called White Liver Disease and is a result of low B12 levels and low selenium amounts in the foods they eat. I wish I could find that paper I read in college many years ago. Basically there are 3 known materials that show up in testing livers, Cobalt, Copper and Selenium all are found in diets of any animal. Low ranges can result in defficient operations of organs. Here is something I found that shows these metals in a deer diet.

http://www.jwildlifedis.org/cgi/content/full/41/3/569

I do not think the meat is bad, again the liver is where all the pollutants are filtered out of the body. By no means don't eat a liver in that shape. Your DNR can provide more information. Here in MO I wrote them about dad's deer and they promply responded. They asked the same questions about how the deer looked and how the meat looked after skinning and how it smelled.