Myelomeningocele and tethered cord
Midline lumbar swelling since birth. Patient has lower limb weakness for about 4 years.
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The cord is not terminated at normal level extending inferiority to the L4/5 level where it goes through a bony defect in the posterior arch elements of L5 to S2 vertebra to a large CSF containing sac (tethered cord with myelomeningocele).
No fat content is seen to suggest lipoma.
Myelomeningocele is known as a cause of tethered cord in 8% of cases 1.
- 1. Raghavan N, Barkovich AJ, Edwards M, Norman D. MR imaging in the tethered spinal cord syndrome. American Journal of Roentgenology. 1989 Apr 1;152(4):843-52.