Breast implants with uplift 6 years ago - large lump along with smaller lumps and unusual crater dimple developed. Next steps?

First and foremost you need to have imaging done of your breast to make sure there is nothing concerning going on with your native breast tissue. This will most commonly involve a mammogram or MRI but can also involve an ultrasound depending on your local imaging modalities. Once you have this information, take those images and reports to your plastic surgeon. They will need to perform a complete physical exam to see what may be going on. Scar formation, fat necrosis, oil cysts etc., are all things that may be happening. First thing first, however, is to rule out the scary things.