Male, 72 years old, with non-small cell lung cancer brain metastases status post SRS to left frontal and occipital lesions, now with new lesions in the right frontal lobe and left occipital lobe. A 10 x 8 mm right frontal lobe lesion is redemonstrated with strong susceptibility artifact and no clear enhancement. This lesion causes no significant local or generalized edema. A 4 mm susceptibility inducing lesion at the left parieto-occipital junction is also redemonstrated showing no significant enhancement. Neither of these lesions has changed appreciably from the prior exam.Sequelae of the previously treated lesions in the left frontal lobe and inferior left occipital lobe are also redemonstrated without significant interval change. The left frontal lobe lesion in particular is associated with strong susceptibility artifact.A 3 mm focus of susceptibility along the right middle frontal gyrus is unchanged from the immediate prior examination. There is no definite enhancement associated with this lesion. No new susceptibility inducing or enhancing lesions are seen. An incidental developmental venous anomaly is seen within the left cingulate gyrus. No abnormal fluid collections are detected. The ventricular system is stable and normal in size.
1.No change in the appearance of the presumed hemosiderin stained metastatic lesions within the right frontal lobe and at the left parieto-occipital junction.2.A 3 mm focus of susceptibility along the right middle frontal gyrus without associated enhancement is unchanged and nonspecific.3.Previously treated lesions within the left frontal and left occipital lobe are stable in appearance.