title: Intramedullary papillary ependymoma with choroid plexus differentiation and cerebrospinal fluid dissemination to the brain.
abstract: This 8-year-old girl presented with a papillary ependymoma in the thoracic spinal cord. Resection was followed by recurrence at the primary site and later in the lumbosacral thecal sac, followed by cerebrospinal fluid dissemination to the brain approximately 5 years after her initial presentation. The tumor showed cytological and immunohistochemical features overlapping those of classic ependymomas and choroid plexus tumors similar to those seen in uncommon supratentorial papillary ependymomas, also known as papillary tumors of the pineal region. The histopathological and clinical courses of this rare spinal papillary ependymoma exhibiting mixed ependymal and choroid plexus-like differentiation are discussed.
authors.affiliation: Department of Pathology, Stanford University Medical Center, Stanford, California, USA.
authors.forename: Mohanpal S
authors.initials: MS
authors.lastname: Dulai
authors.forename: Dario V
authors.initials: DV
authors.lastname: Caccamo
authors.forename: Anita L
authors.initials: AL
authors.lastname: Briley
authors.forename: Michael S B
authors.initials: MS
authors.lastname: Edwards
authors.forename: Paul G
authors.initials: PG
authors.lastname: Fisher
authors.forename: Norman L
authors.initials: NL
authors.lastname: Lehman
mesh_terms: D014408:Biomarkers, Tumor / Q000032:analysis; D001921:Brain / Q000473:pathology / Q000601:surgery; D001932:Brain Neoplasms / Q000473:pathology* / Q000532:radiotherapy / Q000601:surgery; D002471:Cell Transformation, Neoplastic / Q000473:pathology*; D002555:Cerebrospinal Fluid; D002831:Choroid Plexus / Q000473:pathology* / Q000601:surgery; D016545:Choroid Plexus Neoplasms / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D003131:Combined Modality Therapy; D016371:Cranial Irradiation; D004806:Ependymoma / Q000473:pathology* / Q000532:radiotherapy / Q000601:surgery; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae; D008854:Microscopy, Electron; D009364:Neoplasm Recurrence, Local / Q000473:pathology* / Q000532:radiotherapy / Q000601:surgery; D018365:Neoplasm, Residual / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery; D009378:Neoplasms, Multiple Primary / Q000473:pathology* / Q000532:radiotherapy / Q000601:surgery; D016634:Radiosurgery; D018714:Radiotherapy, Adjuvant; D012086:Reoperation; D012447:Sacrum; D013116:Spinal Cord / Q000473:pathology / Q000601:surgery; D013120:Spinal Cord Neoplasms / Q000473:pathology* / Q000532:radiotherapy / Q000601:surgery; D013904:Thoracic Vertebrae
chemical_list: D014408:Biomarkers, Tumor