Malignant transformation of intracranial mature teratoma to yolk sac tumor after late relapse. Case report.

@article{Utsuki2007MalignantTO,
  title={Malignant transformation of intracranial mature teratoma to yolk sac tumor after late relapse. Case report.},
  author={Satoshi Utsuki and Hidehiro Oka and Takao Sagiuchi and Satoru Shimizu and Sachio Suzuki and Kiyotaka Fujii},
  journal={Journal of neurosurgery},
  year={2007},
  volume={106 6},
  pages={
          1067-9
        }
}
The recurrence of intracranial mature teratomas as germ cell tumors of different histological types is rarely reported. The authors describe the first case of the malignant transformation of an intracranial mature teratoma into a yolk sac tumor in a 16-year-old boy who presented with a 1-month history of anorexia and somnolence. Seven years prior to this presentation, the boy had undergone surgery for extirpation of a mature pineal teratoma. Computed tomography images obtained at his second… 

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