These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Meningioma of the conus medullaris mimicking neurofibroma--possibly radiation induced.
    Author: Oikonomou A, Birbilis T, Daskalogiannakis G, Prassopoulos P.
    Journal: Spine J; 2011 Feb; 11(2):e11-5. PubMed ID: 21193353.
    Abstract:
    BACKGROUND CONTEXT: Radiation-induced meningiomas (RIMs) of the brain are the most common RIMs. However, there has been no report in the literature of an RIM of the spine. Conus medullaris is a favorite site for ependymomas, whereas it is an extremely rare location for meningiomas. Dumbbell-shaped configuration is typical for nerve sheath tumors; however, it is very rarely seen in meningiomas. PURPOSE: To describe imaging findings of a possibly RIM at the level of the conus medullaris mimicking a neurofibroma. STUDY DESIGN: A 60-year-old male with 6-year history of irradiated urinary bladder cancer presented with paraparesis. METHODS: Radiography, computed tomography, and magnetic resonance imaging of the thoracolumbar spine were undertaken. RESULTS: Radiography showed widening of intervertebral foramina at T12-L1 level. Computed tomography and magnetic resonance imaging disclosed a lobulated intradural mass at the level of the conus medullaris causing widening and scalloping of adjacent bony structures, with dumbbell-shaped configuration. Surgical biopsy of the mass was consistent with fibroblastic meningioma. CONCLUSIONS: The reported tumor might have developed secondary to irradiation for urinary bladder cancer because meningiomas are the most common radiation-induced central nervous system tumors. Although location at the level of the conus medullaris is atypical for meningioma, and dumbbell-shaped configuration is rather characteristic for neurogenic tumors, they should not exclude a diagnosis of meningioma.
    [Abstract] [Full Text] [Related] [New Search]