Multilevel lumbar disc herniation in 12-year-old twins.

Herniation of a lumbar disc in the pediatric age group is rare. A 12-year-old female twin developed backache and left sciatica after a mild lifting injury. Magnetic resonance imaging of the spine showed multilevel lumbar disc herniation. The patient was managed conservatively and her symptoms subsided within 6 weeks. Magnetic resonance imaging of her asymptomatic twin sister revealed a similar pattern of disc degeneration and multilevel herniation. This report emphasizes the hereditary nature of juvenile lumbar disc degeneration.