Clinical question: Brain lesion; preoperative planning for tumor biopsy/ resection. Signs and symptoms: Dizziness Pre and post enhanced stealth MRI:Examination is performed utilizing surgical planning protocols and is not a complete diagnostic exam.There is a well-demarcated uniformly enhancing solid mass in the inferior left cerebellum measuring maximum of 22 x 32 mm in transaxial dimensions with extensive surrounding vasogenic edema and resultant mass effect on the fourth ventricle with subtle herniation across the midline. There are serpiginous signal voids within the inferior and surrounding the mass consistent with vascularity of the tumor. There are no prior exams for comparison.Additionally examination demonstrate a single well-demarcated focus of CSF signal intensity in the right paramedian pons which could represent a chronic lacunar infarct. Postcontrast enhanced images also demonstrate a tiny high convexity left frontal developmental venous anomaly.
Solid uniformly enhancing right cerebellar mass with surrounding vasogenic edema and mass effect as detailed.