Hard Lump After Fat Graft Removal

After fat is remove from the body via liposuction or by direct excision it will result in scar formation. The area of hard lump is simple collagen deposition(scar tissue). This is normal and it will take several  months to one year  to disappear.

hard lump present in donor site 3 months after is not common.  you should see your surgeon to discuss posibilities

I am not sure what the reason was for removing the fat graft.  Were there any lumps?  Or was there a bulge due to excess fat?  If there was already a hard lump you might have had some fat necrosis.  If there was excess fat then removing it could potentially cause scarring in the area presenting itself as hard lumps.

In any case, it is important to allow the time for the remodeling to happen.  Intralegional steroid injections could be helpful in speeding the process, but it has to be done judiciously and in low doses to prevent tissue atrophy.  You should discuss these options with you doctor, but don't forget it is extremely important to wait six months to a year before any other intervention.  

This may be residiual fat necrosis or a resorbing hematoma or other source of fibrosis. Of course it could be a variety of other cuases. I would consider starting with intralesional steroids such as triamciniolone as an initial step. However, I am certain that your surgeon is familar with this option and may not want to use this for a specific reason

Hardness can be so many different things. It could be inadequate removal to scar tissue jsut to name a few.  You really need to be evaluated before suggesting a treatment.