Secondary malignant neoplasm of brain [C79.31], Reason for Study: ^Reason: hx colon ca with Brain MEts. Eval change/ recurrence History: none- surveillance imaging - Yearly No evidence of acute ischemic or hemorrhagic lesion.Previously seen post resection status of the left frontal lobe superior frontal gyrus is redemonstrated, unchanged.There is no evidence of abnormal new enhancement.Re demonstration of the left occipital lobe, left frontal lobe and the right occipital lobe encephalomalacia, unchanged.Multiple susceptibility lesions on bilateral hemispheres, unchanged since prior scan.Extensive FLAIR/T2 high signal intensity lesions on bilateral periventricular white matter indicate non specific small vessel disease, unchanged.There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, restricted diffusion/acute ischemia, or abnormal contrast enhancement. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The mastoid air cells are clear.Small right maxillary sinus retention cyst is seen, unchanged since prior scan.
1. Post resection status of left frontal metastatic lesion, unchanged since prior scan.2. Multifocal encephalomalacia, non specific white matter lesions and susceptibility lesions are again seen, unchanged.3. No evidence of new abnormal enhancement suggesting new metastatic lesion.