Weakness, surgical planning. There are numerous ring-enhancing lesions of various sizes in the bilateral cerebral hemispheres, as well as in the left cerebellum. Additional foci of enhancement in the posterior fossa along the posterior wall of the fourth ventricle and interpeduncular cistern. A lesion involving the anterior left body of the corpus callosum demonstrate significant mass effect upon the anterior horn of the left lateral ventricle, similar to prior examination. There are postsurgical findings related to right frontal craniotomy for right frontal lobe lesion biopsy with diffuse peripheral enhancement along the surgical cavity margins, at least some of which likely represent residual components of a lesion. There are also enhancing calvarial lesions involving the left parietal bone and at the junction of the left greater wing of the sphenoid and squamous temporal bone.
1. Numerous ring-enhancing lesions scattered throughout the brain parenchyma as well as enhancing lesions involving the calvarium and left skull base may represent metastatic disease and appear similar to prior examination, but have generally enlarged since 10/13/16.2. Leptomeningeal disease in the posterior fossa.I personally reviewed the Images and/or procedure with the Resident/Fellow and agree with this report.