Can lower blepharoplasty with fat reposition cause lump/bumps after a while?

This is a relatively common occurrence in the early post operative period. There can be fat necrosis which leads to lumps or the placent of deep sutures can lead to lumps. I recommend massage for this. In extreme cases a cortisone injection may be required. However there may be side effects from this and I would try alternative treatments first.I would continue with massage for 1 - 2 years.Alexnader Anzarut 

Thanks for the question, there are a number of things that could be going on, best to see your original surgeon who did the operation to discuss options for diagnosing and treating

Yes, you might feel some lumps and bumps until the fat softens. Best of luck and if concerned, talk to you surgeon.