Foot Grows in Baby's Brain

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"It would be a shock to even the most experienced pathologist cutting into a tumor to see this," Dr. Paul Grabb told the ABC affiliate KMGH.
Grabb said he could not tell whether the miniature limbs were from a benign stem cell tumor called a teratoma or the remnants of an identical twin that did not split off and survive, a condition called fetus in fetu.
"It looked like the breach delivery of a baby, coming out of the brain," Grabb told The Associated Press. "To find a perfectly formed structure is extremely unique, unusual, borderline unheard of."