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| | AANS.org Education and Meetings AANS Scientific Journals Neurosurgical Focus |
 | | They occur in 68 to 98% of all meningiomas of the foramen magnum[10,15,17,26,30,31,35] and should be clearly distinguished from meningiomas of the dorsal (posterior) foramen magnum because of the remarkable differences in presenting symptoms, neurological findings, operative approach, postoperative results, complications, and mortality rate. |
 | | Meningiomas of the ventral foramen magnum are one of the most challenging types of meningiomas to treat because a large number of vital neurovascular structures, which are sensitive to injury, are crowded in this deeply hidden central area. |
 | | Eighteen patients with meningioma of the ventral foramen magnum were treated surgically in three neurosurgical departments at the University of Mississippi Medical Center (1990), Loyola University Medical Center (1991--1993), and the University of Arkansas for Medical Sciences (1993--1998). |
| aans.org /education/journal/neurosurgical/june99/6-6-5.asp?... (6313 words) |
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