[Upper cervical intradural lipoma. Apropos of a case].

Intradural lipoma is a rare and slow growing tumor which represents 1% of all intra-spinal tumors. This tumor is often associated with dysraphism. It can be isolated without any associated vertebral or cutaneous malformations. Its clinical evolution is extremely slow and progressive. The fatty composition of this type of tumor allows easy detection by CT as well as by MRI. MRI permits: Reliable and direct assessment (in 3 different plans) of the extension of the lesion. An excellent post operative control.