Thyrotoxicosis with toxic multinodular goiter without thyrotoxic crisis or storm [E05.20], Reason for Study: ^Reason: staging, newly diagnosed lung cancer History: newly diagnosed lung cancer There is about 5 mm sized ring-enhancing lesion on the right corpus callosum body without significant mass effect. The lesion shows restricted diffusion with FLAIR high signal intensity. There are also multiple FLAIR high signal intensity lesions located on subcortical white matter and deep white matter but those lesions do not show any evidence of enhancement.Diagnostic possibilities include demyelinating disease such as multiple sclerosis with active plaque, subacute ischemic infarction and considering the patient history of primary malignancy (lung cancer), the diagnosis of metastatic lesion cannot be excluded. There is no other abnormal enhancing lesion is seen.There is no evidence of acute hemorrhagic or ischemic lesion on the scan.The ventricles, sulci and cisterns are symmetric and unremarkable. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.
Single ring enhancing lesion with restricted diffusion at the right corpus callosum body with multiple FLAIR high signal intensity lesions as described above. Diagnostic possibilities include demyelinating disease such as multiple sclerosis, subacute ischemic infarction and metastatic lesion.No evidence of acute hemorrhagic lesion. 