An embryonic twin has been find inside a woman's brain while she was having surgery for a suspected tumour.
Doctors discovered the twin, known medically as a 'teratoma', complete with bone, hair and teeth, inside the brain of Yamini Karanam, 26.
Yamini sought medical help last September when she began to struggle with conversations and reading.
"If a couple of people were talking in the room, I wouldn't understand what was happening," Yamini told NBC Los Angeles.
"I just didn't imagine any of this."