My sister had painful lumpy implants so she had them replaced and she found a lump.

Your sister should go through the normal pattern of having an ultrasound and mammogram and from that point consider whether to have a biopsy but to keep in mind that a biopsy may rupture breast implant.  Here at Premiere Center for Cosmetic Surgery we always have the patients best interest.  If our board certified plastics surgeons feel that there is something that needs to be done to put the patient at ease we will send out for a biopsy for our patients. Awareness is our ultimate goal and if you need a consultation we offer complimentary consultations in our Miami and Tampa locations.