Miniature brain and skull found inside 16-year-old girl’s ovaryA very unusual teratoma was discovered during appendix surgery Barry Slaven/Science Photo Library A tumour containing a miniature brain has been found growing on the ovary of a 16-year-old girl in Japan. The 10-centimetre-wide tumour was discovered when the girl had surgery to remove her appendix. When doctors cut the tumour out, they found clumps of greasy, matted hair inside, and a 3-centimetre-
