Preschooler with short stature

MRI of spinal stenosis in achondroplasia
Sagittal T2 MRI of the spine shows a very narrow spinal canal with only a small amount of cerebrospinal fluid present anteriorly and posteriorly to the spinal cord, especially at the skull base. There is mild scalloping of the posterior aspect of the vertebral bodies.

The diagnosis was achondroplasia causing spinal stenosis.