My plastic surgeon says my skin is too tight/thin around tissue expanders to expand anymore. Can a bigger implant be inserted?

As has been previously mentioned in the answers below, it's a tough question to answer without examining you. When we expand patients we have to use our best judgment as to how much the tissues will tolerate. If the skin flaps appear to be getting too thin we have to stop expanding because we want good coverage for your implant. Depending upon how your expander is situated on your chest it is possible to open some additional space during the surgery to allow for a large implant. For example, sometimes the expanders don't fill the upper part of the breast enough, so we can open up that space in the OR. That can frequently allow you to accommodate a larger implant. Again, this is best assessed by surgeon taking care of you. Good luck with your surgery.

Without examining you it is hard to
determine if you can be expanded further. However, for patients with thin tissue
there are alternatives, such as the use of fat grafting or products known as
ADM’s (acellular dermal matrix) that can allow safe additional expansion of the
skin so you could have larger implants. You need to confer with an experienced plastic
surgeon. Best wishes.