Retromolar trigone squamous cell cancer treated with CRT and thoracic spinal lesions. There is a right anterolateral paraspinal enhancing mass at the lower T6 to lower T8 vertebral body levels. The lesion measures approximately 60 mm in craniocaudal dimension and 10 mm in thickness, previously 55 mm in craniocaudal dimension and 8 mm in thickness. There is diffuse high T1 bone marrow signal within the imaged lower cervical and upper thoracic spine related to radiation therapy. From T4 through T12, there is a background of heterogenous bone marrow signal with unchanged scattered superimposed intrinsically T1 hyperintense lesions, some of which also display high T2 signal. There is no spinal canal or neural foraminal stenosis. The cystic lesion within subcutaneous tissues at the level of the T6 is unchanged and likely represents an inclusion cyst.
Slight increase in size of the right anterolateral paraspinal enhancing mass extending along the lower T6 to lower T8 vertebral body levels. Otherwise, the appearance of the thoracic vertebral bone marrow appears unchanged, including what likely represent scattered hemangiomas and/or focal fat deposits.