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An unusual cause of low back pain in an adolescent.

›CASE A 14-year-old male presented to our institution with back pain that had persisted for the past month. He denied trauma, recent strenuous activity, night pain, lower extremity dysesthesias, or bowel/bladder dysfunction. The physical examination revealed an apparent spinal asymmetry, a limitation in forward flexion of about 50%, tenderness over the thoracolumbar region, and intact motor and sensory function in the bilateral lower extremities. Plain films showed a low magnitude left-sided thoracic scoliosis but no evidence of vertebral wedging or osseous abnormalities.