Presentation
Low back pain.
Patient Data
Age: 25 years
Gender: Male
From the case:
Unilateral sacralization of L5
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Enlargement with pseudoarticulation / pseudoarthrosis of the left transverse process of L5 and sacrum in keeping with unilateral sacralization of L5.
Spina bifida oculta of L5 and S1.
No disc herniation was seen on axial CT images (not shown).
Case Discussion
CT feature of unilateral sacralization of L5, type IIa according to Castellvi classification of lumbosacral transitional vertebrae.