From Wikipedia, the free encyclopedia.
Craniopagus parasiticus is a medical condition when the undeveloped head of a twin is still attached to a patient's body.
There have only been eight documented cases of this phenomenon. On December 17, 2003, Rebeca Martinez was born in the Dominican Republic with this rare condition. She was the first baby born with the condition to undergo an operation to remove the second head. She died on February 7, 2004, after an 11 hour operation
