title: A case of malignant teratoma developing from the septum pellucidum 7 years after removal of a mature teratoma in the pineal region.
abstract: A report is presented on a case of teratoma with a malignant component arising from the septum pellucidum 7 years after total surgical removal of a mature teratoma in the pineal region. The patient was successfully treated with radiotherapy and total surgical resection of the second tumor. The case is characterized by the development of a second malignant tumor and by the long interval from complete resection of the primary tumor to the occurrence of the second tumor. Our case is not considered to be a recurrence of the mature teratoma of the pineal region but to be a multiple tumor of germ-cell tumor having multicentricity and a different temporal variety.
authors.affiliation: Department of Neurosurgery, Shimane Prefectural Central Hospital, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Kamiya
authors.forename: T
authors.initials: T
authors.lastname: Inagawa
authors.forename: H
authors.initials: H
authors.lastname: Ogasawara
mesh_terms: D000293:Adolescent; D001932:Brain Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D003131:Combined Modality Therapy; D006801:Humans; D008297:Male; D009364:Neoplasm Recurrence, Local; D010870:Pineal Gland; D012688:Septum Pellucidum; D013724:Teratoma / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D014057:Tomography, X-Ray Computed