Doctors Remove Twin From Boy's Stomach

On January 30th, 2012, Peru Doctors planned to remove the remains of a partially formed twin fetus from the stomach of three year old boy, in this case the brother.  The living boy/twin Isbac Pacunda, absorbed his brother in his stomach during development in the mother's womb.  The fetal that is in Isbac is 1 1/2 Pounds, has eyes, bones, hair, and is 9 inches long.  This condition only occurs one in every 500,000 live births.  Some conjoined twins lives as a form of "parasites," which allows them to rely on the body of the other for a blood supply and organ function.  This case was very different since this is known as a fetus-in-fetus.   
http://content.usatoday.com/communities/ondeadline/post/2012/01/doctors-to-remove-remains-of-twin-from-boys-stomach/1?csp=34news