While tissue expansion can produce superior results in terms of matching skin color, texture, and sensation, it has disadvantages. Tissue expansion always requires, at least, two surgical procedures, plus repeated visits to your surgeon to further inflate the expander. In the meantime, the expander is left in place, creating what can in many cases be an unsightly bulge under the skin where the expander is placed. However, in the case of breast reconstruction, this extra volume can be desirable.