Malignant melanoma of skin, unspecified [C43.9], Reason for Study: ^Reason: stage IV melanoma to brain on treatment History: assess for treatment response No evidence of acute ischemic or hemorrhagic lesion on this scan.There is no evidence of abnormal enhancement.The left pontine, non enhancing focal encephalomalacia with gliosis is again seen, unchanged.The right side corpus callosum genu portion again shows gliotic changes with focal encephalomalacia without evidence of enhancement, unchanged since prior scan.The ventricles, sulci and cisterns are unremarkable. 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. There is a retention cyst on the right maxillary sinus.
1. No evidence of acute ischemic or hemorrhagic lesion. No evidence of abnormal enhancement.2. Previously seen nonenhancing left pontine and right corpus callosum genu encephalomalacia with gliosis are again seen, unchanged since prior scan.