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AJNR - American Journal of Neuroradiology

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Spinal Metastasis from Endolymphatic Sac Tumor

K.Y. Tay^a, E. Yu^a and E. Kassel^b

^a Department of Medical Imaging, Princess Margaret Hospital, Toronto, Ontario, Canada
^b Department of Radiology, Mt. Sinai Hospital, Toronto, Ontario, Canada

View larger version (139K): [in this window] [in a new window]   Fig 1. Axial CT of the brain shows a partly calcified posterior fossa mass (white arrow), which is compressing the 4th ventricle and causing hydrocephalus. Note the dilated temporal horns of the lateral ventricles (white arrowheads).

View larger version (162K): [in this window] [in a new window]   Fig 2. Axial T2-weighted image (TR/TE, 4400/90) shows an isointense mass (white arrow) in the right posterior fossa. Note that there is no extension into the internal auditory canal (white arrowhead).

View larger version (160K): [in this window] [in a new window]   Fig 3. Axial contrast-enhanced T1-weighted image (TR/TE, 816/20) reveals homogeneous enhancement in the right posterior fossa mass (white arrow).

View larger version (128K): [in this window] [in a new window]   Fig 4. Sagittal T2-weighted (TR/TE, 5350/112) (A) and postgadolinium-enhanced T1-weighted (TR/TE 666/8) (B) images show multiple enhancing intradural extramedullary masses (white arrows) in the central canal of the lumbar spine.