Disappearance of the previously reported cervicomedullary junction posterior aspect lesion.
De novo intramedullary ring-enhancing lesion at the anterior aspect of the pontomedullary junction averaging 0.8 x 0.9 x 1.9 cm in AP, SS and CC dimensions, suggestive of focal radiation encephalomyelitis.
Mild increased width of the cervicomedullary junction and cervical cord with diffuse central zone T2 hyperintense signal and T1 hypointense signal to the level of mid-body of C3 involving the medulla oblongata and extending to the pontomedullary junction, suggestive of radiation-induced cord edema.