9 Weeks Post BBL: lumps in stomach and possible fat necrosis in butt cheek (photo)

The small surface irregularities over your abdomen are a common and known thing after liposuction especially aggressive liposuction which is done with a BBL. Loose skin makes the uneven appearance worse. YES - massages (professional ones starting the 2nd week after surgery and done 1-2x per week for several weeks + daily self massage with a hand held device or fascia blaster) are a MUST. The massages make a difference in he early post op ~6-8 weeks while the tissue is still tender and healing. After things scar down, the massages do not make as big of a difference. Also, make sure you do not wear the 1st stage compression garment past 6 weeks as they can also leave you with permanent irregularities. As far as the hard lump in your buttocks, that can be fat necrosis. It could also be an area of old hematoma if you underwent trauma in that area post op. It is best to see your PS for all of these concerns.