Intradural spinal lipomas not associated with spinal dysraphism: a report of four cases.

Intradural spinal lipomas that are not associated with spinal dysraphism are rare. We report four cases of adult patients with intradural spinal lipomas. All of the patients were young adults, three women and one man, who ranged in age from 22 to 37 years (mean, 30.3 yr). The clinical presentation of these lesions varied, depending upon the size and location of each lipoma. It is interesting that the symptoms in the women gradually deteriorated during pregnancy or after delivery. Magnetic resonance imaging was very useful in determining the exact location of lipoma. In three of four patients, neurological improvement was obtained after decompressive laminectomy and partial removal of the lipoma.