120lbs, 33, Hispanic female - what caused face to be so sunken after sinus surgery? (Photos)

Sinus surgery is entirely internal and should have no effect. If you feel that your face is flat, then fat transfer can be a good procedure to address this. Just find a facial specialist for consultation.

Your photos are difficult to evaluate since you are smiling a bit in your before photo, and that will naturally make your cheek a bit fuller. After 25 years of performing both nasal and sinus surgery, we have not seen any cases of facial atrophy following surgery. If there is more to the story regarding the type of surgery that you had, please feel free to re-ask your question. Sincerely, Dr Joseph