Large and firm "lump" in lower abdomen 11 days post tumescent lipo, is this normal?

Thanks for your question.
It is not at all unusual to have significant swelling and even very hard and firm "lumps" after liposuction.  This is related to tissue trauma from the procedure.  Rarely do we see true hematomas (collections of blood).  The good news is that it almost always resolves with time.  I recommend gentle massage and near continuous compression garments for the first 4 weeks after liposuction.  Make sure you follow up with your surgeon as scheduled.  Of course if you had a significant change in your condition (redness, fevers etc.) follow up sooner.
Best wishes.

Swelling is expected and some do swell more than others. I would suggest sending a photo to your surgeon and ask if you need to be seen.

Hello. Great question. Congratulations on your procedure. A personal examination is needed to determine what your lump is. It may be swelling or fluid collection. Please schedule a follow up appointment with your surgeon.