Can fat transfer to the hip deeps cause irregularities under butt?

Based on the posted photos I see more than cellulite. I see a dent. Best to virtual consult with... But I do revision of these issues. I offer AVELI cellulite reduction surgery with either fat grafts or Radeisse injections to some out these area. Fee $6,000

It looks to me like your surgeon specifically did liposuction just below your buttocks of your upper thigh. A lot of plastic surgeons do liposuction erroneously in this area because they believe it makes the buttocks look rounder and fuller. The area is sometimes referred to as the banana roll.
Personally I think it’s a big mistake to do Liposuction in that area because it distorts the natural S-curve of an ideal female figure.
I suggest you bring this up with your surgeon and ask them if they did liposuction in the area of concern. if liposuction of your thighs was included on the consent then you technically signed up for having that done.
If you did not consent to having liposuction in that area then that is a complicated situation called the operating without consent for which you could seek damages.
By your description you do include liposuction of the outer thigh and that’s probably what that represents.
Delivering consistent quality liposuction results is more difficult than most people believe.
I encourage patient to aggressively vet plastic surgeons and choose carefully before having permanent and irreversible procedures like liposuction.
I recommend most patients do this by having multiple in person consultations at which time I recommend patients ask each provider to show their entire collection of before and after pictures of the areas you’re interested in having treated. Seeing a handful of preselected pictures is insufficient to get a clear understanding of what average results looks like in the hands of each provider. This is why patients should ask providers to open up their portfolio and show as many pictures as they’re willing to. An experienced provider should have no difficulty showing you at least 50 sets of before and after pictures of commonly performed procedures and for less commonly performed procedures they should still be able to show at least 20 or 30 sets of before and after pictures.
At this point if you want to change the outcome you’ll need revision surgery.
Most likely grafting fat back into the area is going to be the only realistic option. Doing that is far more difficult and complex than the primary procedure.
Correcting poorly done Liposuction is far more difficult than Primary Liposuction and while it’s important to choose the most talented an experienced procedure for primary procedures it is even more so for revision work.
For some patients it’s not worth trying to correct the outcome because of the complexity of the situation. For some people the potential improvement is slight and it may require multiple procedures none of them which guarantee a successful outcome.
Revision work is extremely valuable based on how aggressive the first procedure was done.
Sometimes there’s virtually nothing we can do and other times we can clean up the result and make it look the way patients want it to.
Realistically correcting liposuction outcomes is difficult and patients need to find extremely talented providers and be ready for having more than one procedure if needed.
In the end your surgeon is responsible for the outcome of the procedure and you could certainly start by talking to him or her.
Whether that is the correct person to do revision work or not it’s something you will have to decide on your own.
In the end your surgeon is responsible for the outcome just like you are responsible for choosing that provider.
When in doubt slow down and schedule more consultations.
Find the right plastic surgeon and everything falls into place.
Best,
Mats Hagstrom MD