Missing scale?

[legitimatehypnotist]

So, my non-feeder finally ate, and now, again, the little guy is giving me yet another scare.
I took him out yesterday for his first time being really handled since the entire non-feeding fiasco began. Upon taking him out, I found that he had what appeared to be an all white scale, or possibly a missing scale? There are no sharp things in his tank that could cut him, so I'm sort of at a loss. He doesn't show any signs of mites whatsoever and his tank is always clean and dry and changed regularly.
I have some pictures, I apologize for their large size, but if anyone could help, I'd appreciate it.
http://i98.photobucket.com/albums/l277/pooppeepoop_2006/wonderfuls/IMG_8515_zpsa9470342.jpg
http://i98.photobucket.com/albums/l277/pooppeepoop_2006/wonderfuls/IMG_8514_zpsc5a827ae.jpg
http://i98.photobucket.com/albums/l277/pooppeepoop_2006/wonderfuls/IMG_8524_zpse7a02440.jpg
The third one is quite blurry, but in it, you can actually see the depth of the white mark. It does appear to be a missing scale. :(
Has anyone seen this before?

[hypnoctopus]

One of my snakes occasionally gets something like that. I'm not sure if it's the same thing, but with my snake, it looks like a single scale is trying to shed. It always goes away after she has a shed. I don't think you have anything to worry about.