Three Weeks After Receiving Restalyne Lift For My Checks And

three weeks after receiving restalyne lift for my checks and the trough area, I developed a oval shaped bump under my lower right eyelid.
Can a festoon cause this?
I have 2 different answers to why this happened. Onedoctoer says it is the presence of the festoons, another doctor says he really can't say why this happened. I had surgery to remove the lump. The lump had fat and restalyne in it.