Lumps Above Lip After Filler Injected Months Ago; Scar Tissue? Can It Be Fixed?

It is highly unlikely for Juvederm to cause scar tissue.  It is more than likely Juvederm placed too superficially.  This can be dissolved with Hyaluronidase.   You should return to your original doctor for correction.  He will likely do this at no charge.

if all you say is true, then the lumps should be reversible with hyauronidase injections.  best of luck. 

Definitely try hyaluronidase before a surgical approach.  One of the nice things about hyaluronic acid fillers like restylane and juvederm is that they respond to hyaluronidase and can be diminished or eliminated in a relatively easy manner.

Lumps in the lips after fillers may represent filler product and hyaluronidase may dissolve the product. I would probably try that first before excising anything from the lip. Of course, an exam is essential.

The lumps that you have are probably Juvederm (although you also mentioned that you had filler nearly one year ago as well) and not scar tissue.  Please try the Hyaluronidase before you do anything involving an incision which may leave an unsightly scar.   

If it is filler, which is what I'd assume it is, hyaluronidase can remove it quite easily. Before going through a surgical route, I'd try a bit of hyaluronidase as it's an easy procedure and I bet it gets rid of the pockets of filler that sound like they are there.