Clinical question: preop for brain tumor resection. Signs and symptoms: Brain tumor. Unenhanced Stealth head CT:A standard preoperative nonenhanced stealth head CT is performed. A halo is secured to patient's head.Examination demonstrates mass in the right anterior temporal lobe with extension into the inferior right frontal lobe and right basal ganglia. Mass effect and deviation of third ventricle to the left is similar to prior MRI exam from 9 -- 6 -- 11. Ventricular system remains stable in size and unchanged. There is no detectable hemorrhage or any new foci of abnormality since prior exam. There is evidence of a small burr hole in right frontal bone likely from prior surgical approach for biopsy.
Nonenhanced stealth head CT reveals stable right temporal, frontal and basal ganglia mass and its associated mass effect.