The short answer to the question is an unqestionable "Yes," i.e. filler can be used in the columella region. I personally use it quite frequently in the region as part of elevating the nasal tip when this is required or desired. A couple of caveats are in order, however. This should be done with an HA filler appropriate to this region, injected with the proper technique, and by an experienced injector (this region is definitely not for the hands of novice injectors)--especially since this area has undergone prior surgery in this case, which can alter the anatomy of the underlying vasculature . You would be wise to consult with an experienced, board certified cosmetic dermatologist. Best of luck.
