I am NOT a doctor, but I have looked at hundreds of sinus CT scans now.  Idk what causes ENS, I think it can be caused by; messed up nerves, lack of tissue,poor airflow dynamics, lack of moisture, or a combination of all of them.  I am not saying you do not have ENS.  With all of that said you look like you have a lot of tissue, pretty much, if not 100% normal.  (ENTs will likely tell you your turbinates are "hypertrophied" and recommend additional surgery, but I disagree with that).  It does however look like a very small amount of tissue was once removed from both of the lower portion of your anterior inferior turbinates (a small amount from the lowest part of your IT in the very front).  BUT what's interesting is that your nasal floor has bulked up some to fill in that gap! I haven't seen that yet in any ct scans.  It gives me hope for my case.  I posted a link to my CT scans, look at it to find out what/where the inferior turbinates are; they are right above the upper teeth.  My scans show a huge black area (emptiness) where the lower part of the inferior turbinates are. Hopefully that helps you identify where your inferior turbinates are located.

http://smg.photobucket.com/user/cr250bronco/library/ENS