Male, 38 years old, with history of thalamic pilocytic astrocytoma, grade 1, follow-up examination. Redemonstrated is a heterogeneous, partially calcified mass arising in the right posterior thalamus. As before, the lesion is exophytic and projects posteriorly into the right lateral ventricular atrium. The overall size of lesion has not significantly changed and continues to measure 34 x 25 mm. Patchy internal enhancement has become slightly larger and more confluent when compared to the immediate prior examination, though it appears similar to older exams.No new intracranial lesions are seen. No significant edema is detected. A punctate nonspecific focus of T2 hyperintensity is seen in the left inferior frontal juxtacortical white matter, unchanged. Apart from effacement of the right ventricular atrium, the ventricular system is stable and normal in size.
There has been no significant interval change in size or imaging characteristics of a heterogeneous, exophytic right thalamic tumor.