The advent of modern imaging techniques of the brain and spinal cord has revolutionized the detection and diagnosis of disease. There is no better example of this than in the diseases of the central nervous system. The quality of images obtained using MRI hardware and software is exquisite, rivaling or sometimes even surpassing the quality of appearance of brain specimens used in gross anatomy.

The proliferation of scans that obtain such high-quality images also has resulted in the unintended consequence of detecting incidental lesions of varying pathological significance. Being familiar with these incidental findings will help pediatricians manage these lesions properly and obtain consultation appropriately.

Advanced imaging systems such as MRI and CT scanners have become ubiquitous in the U.S. Many clinics and outpatient facilities house at least one of these, and major medical complexes often have multiples of each. The Organization for Economic Cooperation and Development reports that in...

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