This Gives a Whole New Meaning to "transvaginal nephrectomy"
Donating a kidney through your vagina or rectum. - By William Saletan - Slate Magazine
The kidney doesn't start in the vagina, of course. That's just where it comes out. For several years, doctors have been learning how to do this. It's called "transvaginal nephrectomy" or, more broadly, "natural orifice" surgery. They cut the kidney loose and pull it through an incision in the vaginal wall and out the other end.
Read the entire article! There's anuses, too, and superawesome plastic-bag magic tricks! I AM NOT MAKING THIS UP!