Brain tumor. Status post biopsy. Since the previous MRI examination, there has been a stereotactic biopsy and aspiration of the cystic hypothalamic/third ventricular lesion. Expected postoperative changes are present along the surgical tract through the left frontal lobe and within the cystic lesion. The lesion show mildly nodular rim of contrast enhancement peripherally and layering debris/blood products centrally. The CT scan from February 23, 2016 shows punctate calcifications in the inferior aspect of the cystic mass. The lesion now measures 2.8 cm x 2.2 cm, compared to 2.8 cm x 2.4 cm previously. The associated mass-effect has improved with improved lateral ventricular dilatation. There is no other contrast enhancing brain lesion. The brain parenchymal T2-hyperintensity surrounding this cystic lesion which also involves the posterior limb of left internal capsule is not significantly changed. There is mild dural enhancement over the left cerebral convexity consistent with postsurgical change. Postoperative changes also include left sided scalp swelling and fluid overlying the burr hole.
1.Postoperative changes of biopsy and aspiration of cystic suprasellar mass. 2.The cystic component has been partially drained with improved mass-effect and hydrocephalus.