What's grosser than a black, twisted umbilical cord remnant dangling from an infant's belly just before it falls off? Very little, but I think perhaps removing organs through the belly button beats it. One more time: removing internal organs through the belly button. Good God.
The BBC reports that a British surgeon with the absurdly cool name Paraskevas Paraskeva has gotten down what he calls keyhole (or single incision laparoscopic) surgery, the belly button being the keyhole. Dr. Paraskeva has gotten so good at his procedure that he can get n appendix out of you within 20 minutes; gall bladders take about an hour. You could drop some film off, have your gall bladder removed through your navel and pick up your photos on the way home, since the surgery is outpatient.