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    Intracranial teratomas in fetal life and infancy. Tamura H,Kury G,Suzuki K Obstetrics and gynecology
    Intracranial teratocarcinoma in a child with anterior sacral and intrasacral meningocele. Holness R O,Hoffman H J,Mancer K,Armstrong D Neurosurgery A very rare combination of two rare entities is reported. The patient had anterior sacral and intrasacral meningoceles, which were repaired at age 3 years, and 7 years later he presented with hypopituitarism due to a suprasellar teratocarcinoma. There has been no evidence of tumor recurrence in the 2.5 years since subtotal excision and radiotherapy (patient was last seen in 1977). Two aspects of the case are reviewed: the unusual nature of the spinal defect and the implications of its association with an intracranial tumor of developmental origin. 10.1227/00006123-197803000-00013
    Malignant teratoma of the cerebellopontine angle: case report. Iplikçioğlú A C,Ozer F,Benli K,Bertan V,Ruacan S Neurosurgery A case of malignant teratoma of the cerebellopontine angle is presented. Preoperative findings suggested an acoustic neurinoma or a meningioma. Particularly in adulthood, malignant teratomas arising in unusual locations can simulate common intracranial tumors. 10.1227/00006123-199007000-00022
    The growing teratoma syndrome after subtotal resection of an intracranial nongerminomatous germ cell tumor in an adult: case report. Bi Wenya Linda,Bannykh Serguei I,Baehring Joachim Neurosurgery OBJECTIVE AND IMPORTANCE:We report a rare complication after resection of a recurrent intracranial nongerminomatous germ cell tumor in an adult. The growing teratoma syndrome, as originally described with pediatric germ cell neoplasms, represents tumor recurrence, often cystic, that sometimes is observed after partial response to multimodality therapy and despite decreasing tumor serum markers. The enlarging tumor consists of elements of a mature teratoma that presumably are refractory to chemotherapy or radiation. To our knowledge, this is only the third case of the growing teratoma syndrome in an adult patient with nongerminomatous germ cell tumor. CLINICAL PRESENTATION:A 26-year-old man had signs of recurrent obstructive hydrocephalus 6 months after multimodality treatment of a diencephalic yolk sac tumor and endoscopic third ventriculostomy. Imaging studies revealed large multilocular cystic masses originating from the tumor bed and partially obstructing the ventriculostomy. INTERVENTION:Near total tumor resection and fenestration was performed. Histopathological analysis demonstrated a mature teratoma. CONCLUSION:Surgical resection, if feasible, is the treatment of choice for the growing teratoma syndrome to establish the correct diagnosis and prevent complications.