It is not possible to accurately identify hyaluronic acid fillers in the face with ultrasound. It is possible to identify large pocket of fillers but these are also obvious because of localized fullness in the face. The other issue is that these fillers are runny a drift in the face. This...
Using fillers to plump the labia majora is considered a low risk procedure. Some possible risks are bruising, temporary swelling, and lumpy areas. I encourage you to discuss your concerns with an experienced injector.
If the bump is Restylane, then it probably can be resolved by the doctor injecting hyaluronidase. Hyaluronidase can dissolve hyaluronic acid. It is a pretty simple procedure, and the results can be seen very quickly, usually within a few hours. Once it has been dissolved, then you can...