Is a fat upper lip treatable that resulted from a punch to the face? (Photos)

Dear Phillippe79Thank you for your question and photos!  The reduction of the fullness can be done by injection of steroid or antimetabolite as a first attempt. Surgical reduction would be a second choice if they did not work.With Warm RegardsTrevor M Born MD

this doesnt really show the shape of your lip, if the issue is INSIDE YOUR LIP I would leave it alone, nobody sees it!  If its outside the lip then you can try steroid with 5fu or co2 + vbeam laser.  it maybe true that surgery isnt an option but I cannot tell from these photos. lip plumpers and exfoliators should be used daily to soften the area (see link). Best, Dr. Emer.

Sounds like you had an organized hematoma or a blood clot in the area where the lip is now fat. This may need to be removed by direct excision of the lip tissue. In the hands of a plastic surgeon this should be a relatively easy procedure. Good luck from New York City plastic surgery

My best guess is your injury caused a laceration that was not repaired or was repaired without correct anatomic alignment at the time of injury.
If the tissue edges heal together in a non-aligned manner then this could change your lip contour.
In certain circumstances it’s possible to try to re-create the injury surgically and realigned the edges in the more anatomic manner.
Easier said than done and probably not advisable for most people.
It may be possible to excise lip tissue to try to make your lips more symmetrical but most likely plastic surgeons would lean towards not intervening just like yours did.
Often it’s very difficult to see malalignment or scar tissue at all the way lips heal.
I guess in situations like this an ounce prevention goes a long ways but that is playing Monday morning quarterback isn’t it.
I suppose it’s also possible to inject filler’s in the opposite side for the sake of symmetry.
Most likely your best option is to leave things the way they are
Best, 
Mats Hagstrom MD