title: Supratentorial extraventricular anaplastic ependymoma with extracranial metastasis.
abstract: Ependymoma is a relatively rare malignancy accounting for 2.0% of all primary central nervous system tumors in adults. Extracranial metastasis is a very uncommon complication of gliomas, especially of anaplastic ependymomas. The objective of this paper is to show that ependymomas can metastasize to soft tissue and lymph nodes as well as to share our approach to this challenge. We report a male patient with anaplastic ependymoma that recurred, metastasizing to the neck and lymph nodes. Metastatic disease was diagnosed based on clinical presentation of a palpable nodule on the right neck and diffuse cervical lymphadenopathies. A biopsy was obtained and pathology revealed anaplastic ependymoma. Whole-body fluorodeoxyglucose positron emission tomography scan showed metastatic disease in the right mastoid region with diffuse uptake in the cervical lymph nodes. Clinical and radiologic response was achieved after three chemotherapy cycles of etoposide, cisplatin, vincristine, and cyclophosphamide. This case highlights extracranial metastasis to the soft tissue as an atypical presentation of recurrent anaplastic ependymoma. Other reported instances of extracranial metastatic ependymoma with this presentation are discussed. The possible metastatic pathways of intracranial disease are discussed. It also illustrates how extracranial disease remains stable with systemic chemotherapy.
authors.affiliation: Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, 1400 Holcombe Boulevard, Room FC7.3000, Unit 431, Houston, TX 77030, USA. Electronic address: lpachella@mdanderson.org.
authors.forename: Laura A
authors.initials: LA
authors.lastname: Pachella
authors.affiliation: Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, 1400 Holcombe Boulevard, Room FC7.3000, Unit 431, Houston, TX 77030, USA.
authors.forename: Carlos
authors.initials: C
authors.lastname: Kamiya-Matsuoka
authors.affiliation: Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, 1400 Holcombe Boulevard, Room FC7.3000, Unit 431, Houston, TX 77030, USA.
authors.forename: Eva Lu T
authors.initials: EL
authors.lastname: Lee
authors.affiliation: Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
authors.forename: Adriana
authors.initials: A
authors.lastname: Olar
authors.affiliation: Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, 1400 Holcombe Boulevard, Room FC7.3000, Unit 431, Houston, TX 77030, USA.
authors.forename: W K Alfred
authors.initials: WK
authors.lastname: Yung
mesh_terms: D001932:Brain Neoplasms / Q000473:pathology*; D004806:Ependymoma / Q000556:secondary*; D006801:Humans; D008207:Lymphatic Metastasis / Q000473:pathology*; D008297:Male; D009333:Neck / Q000473:pathology*; D012983:Soft Tissue Neoplasms / Q000556:secondary*; D055815:Young Adult
keywords: Anaplastic ependymoma; Extracranial metastases; Extraneural metastases