title: Atypical teratoid-rhabdoid tumor spreading along the trigeminal nerve.
abstract: We here describe the case of a boy with an atypical teratoid-rhabdoid tumor (ATRT) of the 4th ventricle at 1 year of age and a local tumor recurrence at 19 months of age. Due to brainstem infiltration, only incomplete tumor resection was possible each time. High-dose chemotherapy, stem cell transplantation and irradiation resulted in complete tumor remission on a control MRI. At 8 years of age, another tumor appeared extending from the cerebellopontine angle along the right trigeminal nerve through Meckel's cave into the cavernous sinus. The trigeminal tumor was not in continuity with the primary ATRT but was located within the field of prior irradiation, neuroradiologically mimicking a schwannoma or a meningioma. The origin of the trigeminal tumor as a late metastasis of the former ATRT or as a less likely irradiation-induced secondary ATRT and the operative approach are discussed.
authors.affiliation: Institute of Brain Research, Tubingen, Germany. rudi.beschorner@med.uni-tuebingen.de
authors.forename: R
authors.initials: R
authors.lastname: Beschorner
authors.forename: M
authors.initials: M
authors.lastname: Mittelbronn
authors.forename: A
authors.initials: A
authors.lastname: Koerbel
authors.forename: U
authors.initials: U
authors.lastname: Ernemann
authors.forename: D R
authors.initials: DR
authors.lastname: Thal
authors.forename: H-G
authors.initials: HG
authors.lastname: Scheel-Walter
authors.forename: R
authors.initials: R
authors.lastname: Meyermann
authors.forename: M
authors.initials: M
authors.lastname: Tatagiba
mesh_terms: D001932:Brain Neoplasms / Q000175:diagnosis* / Q000628:therapy; D017024:Chemotherapy, Adjuvant; D002648:Child; D003390:Cranial Nerve Neoplasms / Q000175:diagnosis* / Q000601:surgery; D020546:Fourth Ventricle / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000628:therapy; D018335:Rhabdoid Tumor / Q000175:diagnosis* / Q000628:therapy; D033581:Stem Cell Transplantation; D013724:Teratoma / Q000175:diagnosis* / Q000628:therapy; D020433:Trigeminal Nerve Diseases / Q000175:diagnosis* / Q000601:surgery