Figure 7: Calcific tendinitis of the longus colli. (a) Sagittal CT showing rounded calcification anterior to the dens just below the C1 anterior arch (arrow). Prevertebral edema causes anterior bowing of the pharyngeal mucosa (arrowhead). (b) Prevertebral edema is more conspicuous on sagittal T2 fat-suppressed image (arrowhead). The calcification of the longus colli tendon is not well appreciated on MRI.