Recent right-sided craniotomy for resection of a metastasis. Headache. There are postoperative findings related to a right-sided craniotomy for resection of a cystic appearing mass. There is fluid, air and a small amount of blood products within the resection cavity, as well as pneumocephalus along the bilateral frontal convexities, as well as scalp swelling overlying the craniotomy. There is circumferential enhancement along the margins of the resection cavity, particularly posteriorly, which measures up to 5 mm in thickness. There are curvilinear hyperdensities in the right sylvian fissure and right posterior frontal lobe sulci. There is a small amount of fluid subjacent to the craniotomy that measures up to 4 mm in thickness. There is extensive confluent high T2 signal surrounding the resection cavity and persistent effacement of the third and lateral ventricles, as well as persistent right to left midline shift of 4 mm. There are scattered foci of high T2 signal elsewhere in the cerebral white matter, but no evidence of acute territorial infarction. There is mild mucosal thickening in the maxillary sinuses.
Postoperative findings related to a right-sided craniotomy for resection of a cystic appearing mass with findings suggestive of residual tumor along the margins of the resection cavity and surrounding edema. 