Voluma injections in cheeks resulting in angular, gaunt looking face. Is this just swelling?

Post injection swelling is completely normal and something to be expected. Results will continue to get better and it takes around two weeks for the filler to be settled in. If you're having concerns, call the office you visited and ask for a follow up in about a week. The injector can give you a massage and either add more to even it out or take out some if you feel it is bothering you. Juvederm brand is a great filler, it was a good choice. I wouldn't get discouraged just yet. Best of Luck. 
Dr. Rosy Sandhu

Unfortunately, it is too early to make an accurate assessment.  I usually tell patients to wait 2-4 weeks before deciding how to proceed.  That being said, you should express your concerns to your injector.  He/she will be able to tell you if they think it is normal swelling.  

There normally is some degree of swelling after a Voluma injection and this will affect the appearance. It can take 1-2 weeks to get a better idea of what your true results will be.  If you are not satisfied with your treatment after this time, you should discuss this issue with the physician who treated you.