Welcome in H.C.M.
I have gone through your query regarding sinus problem which had been corrected by surgery. As you said that you have been operated twice, but still you have problem, for this I would like to tell you please don't be discourage, these facial swellings some times takes longer time to disappear,once you are free of infection in nasal cavity
and swelling than you go for these two basic investigations-
(1) Diagnostic Nasal endoscopy
(2) M.R.I. of paranasal sinuses
By these investigations it will be clear that what anatomical obstruction is still persisting which
than accordingly plan for treatment.