The role of MR imaging in the diagnosis and treatment of anterior sacral meningocele

Report of two cases

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✓ Anterior sacral meningoceles are rare. This report describes familial anterior sacral meningoceles in a father and daughter who underwent magnetic resonance imaging as part of the preoperative evaluation. Magnetic resonance imaging showed a pelvic teratoma in the daughter and confirmed the absence of abnormal tissue in the father — findings not clearly provided by ultrasound studies, myelography, or contrast-enhanced computerized tomography. It is believed that MR imaging is the most useful preoperative diagnostic technique available in establishing a treatment plan for anterior sacral meningocele.

Article Information

Address reprint requests to: K. Stuart Lee, M.D., Section on Neurosurgery, Wake Forest University Medical Center, 300 South Hawthorne Road, Winston-Salem, North Carolina 27103.

© AANS, except where prohibited by US copyright law.

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Figures

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    Case 1. Computerized tomography after intrathecal injection of iohexol demonstrating a large anterior sacral meningocele filled with contrast as well as a possible filling defect (arrows).

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    Case 1. T1-weighted magnetic resonance image (TR 450 msec, TE 20 msec) demonstrating sacral abnormalities and the anterior sacral meningocele with septations.

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    Case 1. T2-weighted magnetic resonance image (TR 2000 msec, TE 60 msec) demonstrating a high-signal mass corresponding to the teratoma found at surgery (arrows).

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    Case 2. T1-weighted magnetic resonance (MR) images (TR 600 msec, TE 20 msec) (left) and T2-weighted MR images (TR 2000 msec, TE 20 msec) (right) showing a simple cystic meningocele without an associated tumor.

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