Siblings can be a real headache, but one Indiana woman's story takes the cake.
WNBC reports 26-year-old Yamini Karanam was having trouble paying attention and understanding things in everyday life.
She told the station, "Problems with listening comprehension. If people were talking, I wouldn't understand what was happening."
She eventually found Dr. Shahinian in Los Angeles who found what he thought was a tumor in her brain. After performing a unique surgery to remove it, he discovered it was something completely different.
It turned out to be her embryonic twin that never developed -- complete with hair, bones and even teeth. The medical phenomenon is known as a "teratoma." Fortunately, Yamani is expected to make a full recovery.
As surprising as this was, there have been crazier stories.
In 2008, a 30-year-old plumber in England was experiencing serious abdominal pain. When he stumbled into the doctor's office bleeding from his belly button, his stomach ruptured and an embryonic twin came spilling out. In short: He kind of gave birth to his 30-year-old twin.
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