Indeed, I keep a copy of my lab results for the last N years because they sometimes get lost, once through no real fault of the doctor (http://en.wikipedia.org/wiki/2011_Joplin_tornado).

Grrr, I'm now going to have to view every lab report that's not an original with suspicion, and make sure my doctors aren't making recommendations due to screwed up copies.

Lossy compression is not an acceptable default for a general purpose device.