A breast implant has at least an outer shell which is composed of a
resorbable material. The implant, which can be formed entirely of
bioresorbable material such as a collagen foam, is sized and shaped to
replace excised tissue. The implant supports surrounding tissue upon
implantation, while allowing for in-growth of fibrous tissue to replace
the implant. According to various alternative embodiments, the implant is
elastically compressible, or can be formed from self-expanding foam or
sponges, and can be implanted through a cannula or by injection, as well
as by open procedures. The implant can carry therapeutic and diagnostic
substances.
