Lesions of the craniovertebral junction.

There has been a renewed interest in the normal and pathologic lesions of the CVJ with the growth of MR imaging. A host of pathologies, both congenital and acquired, may manifest at the CVJ. Basilar invagination and basilar impression and their impact on the CMJ are readily diagnosed using a variety of noninvasive imaging modalities. Evaluation of the CVJ on cranial and cervical MR examinations should be a routine part of image interpretation.