Vertebral scalloping in neurofibromatosis-1.

A 39-year-old male patient known to have neurofibromatosis-1, presented with sciatica and low back pain. At the age of 27, an MRI of the spine revealed widening of the lumbar canal due to posterior scalloping of the last 4 lumbar vertebrae. Repeat MRI and simple lateral lumbosacral plain film at the age of 39, revealed significant progression of the lumbosacral lesion.