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Intracranial and spinal ependymomas: review of MR images in 61 patients

Korean Journal of Radiology, 2002, 3(4), , pp.219-228

2002. This work is published under http://creativecommons.org/licenses/by-nc/3.0 (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;Copyright © 2002 The Korean Radiological Society 2002 ;ISSN: 1229-6929 ;EISSN: 2005-8330 ;DOI: 10.3348/kjr.2002.3.4.219 ;PMID: 12514338

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  • Title:
    Intracranial and spinal ependymomas: review of MR images in 61 patients
  • Author: Choi, Ja-Young ; Chang, Kee-Hyun ; Yu, In Kyu ; Kim, Keon Ha ; Kwon, Bae Joo ; Han, Moon Hee ; Kim, In-One
  • Subjects: Adult ; Age ; Age Distribution ; Brain Neoplasms - diagnosis ; Brain Neoplasms - epidemiology ; Cysts ; Edema ; Ependymoma - diagnosis ; Ependymoma - epidemiology ; Female ; Hemorrhage ; Humans ; Magnetic Resonance Imaging ; Male ; Original ; Retrospective Studies ; Spinal cord ; Spinal Cord Neoplasms - diagnosis ; Spinal Cord Neoplasms - epidemiology ; Tumors ; 방사선과학
  • Is Part Of: Korean Journal of Radiology, 2002, 3(4), , pp.219-228
  • Description: To compare the age distribution and characteristic MR imaging findings of ependymoma for each typical location within the neuraxis. During a recent eleven-year period, MR images of 61 patients with histologically proven ependymomas were obtained and retrospectively reviewed in terms of incidence, peak age, location, size, signal intensity, the presence or absence of cyst and hemorrhage, enhancement pattern, and other associated findings. Among the 61 patients, tumor location was spinal in 35 (57%), infrartentorial in 19 (31%), and supratentorial in seven (12%). In four of these seven, the tumor was located in brain parenchyma, and in most cases developed between the third and fifth decade. Approximately half of the infratentorial tumors occurred during the first decade. The signal intensity of ependymomas was nonspecific, regardless of their location. A cystic component was seen in 71% (5/7) of supratentorial, 74% (14/19) of infratentorial, and 14% (5/35) of spinal cord tumors. Forty- nine percent (17/35) of those in the spinal cord were associated with rostral and/or caudal reactive cysts. Intratumoral hemorrhage occurred in 57% (4/7) of supratentorial, 32% (6/19) of infratentorial, and 9% (3/35) of spinal cord tumors. In 17% (6/35) of spinal ependymomas, a curvilinear low T2 signal, suggesting marginal hemorrhage, was seen at the upper and/or lower margins of the tumors. Peritumoral edema occurred in 57% (4/7) of supratentorial, 6% (3/19) of infratentorial and 23% (8/35) of spinal cord tumors. Seventy-two percent (5/7) of supratentorial and 95% (18/19) of infratentorial tumors showed heterogeneous enhancement, while in 50% (17/34) of spinal cord tumors, enhancement was homogeneous. Even though the MR imaging findings of ependymomas vary and are nonspecific, awareness of these findings, and of tumor distribution according to age, is helpful and increases the likelihood of correct preoperative clinical diagnosis.
  • Publisher: Korea (South): The Korean Society of Radiology
  • Language: English
  • Identifier: ISSN: 1229-6929
    EISSN: 2005-8330
    DOI: 10.3348/kjr.2002.3.4.219
    PMID: 12514338
  • Source: KoreaMed Synapse
    GFMER Free Medical Journals
    MEDLINE
    PubMed Central
    Alma/SFX Local Collection
    KoreaMed Open Access
    ProQuest Central
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