I have a doubt about a potential registration problem after running recon-all -all. I noticed that one of the image outcome when opened with tkmedit shows no-brain tissue (perhaps eye tracts) ventral to orbitofrontal areas. I have attached snapshots to illustrate the image.

I would greatly appreciate your output on this since I have no experience with FS and I am not sure what to expect. I would like to enquire whether I should be concerned about this image or if this is not a problem. 

Many thanks,

Pablo