Clinical question: Evaluate brain abscess, compare ventricular size; compared to previous scans. Signs and symptoms: Abscess. Pre-and post-enhanced brain MRI:No diffusion weighted abnormalities.Examination demonstrates interval removal of a left frontal approach ventricular catheter since prior study. There is also significant interval decrease associated edematous changes along the course of catheter since prior study. Thick band of enhancement which was noted along the course of left frontal catheter has also significantly decreased and appears as a thin linear enhancement extending from the level of the left frontal burr hole to the left lateral ventricular wall. There is also evidence of linear susceptibility signal changes along this course renal catheter similar to prior exam and consistent with a small amount of hemorrhage.Examination also demonstrate a thin linear band of hemosiderin deposition with enhancement extending from right posterior parietal burr hole to the right lateral ventricle without change since prior study.There is no evidence of an abscess formation and no convincing evidence of leptomeningeal enhancement. No detectable abnormal enhancement of the ependyma lining the ventricular system. Ventricular system remains stable in size and with maintained midline.
1.No acute intracranial findings.2.Near complete resolution of edematous changes in the left frontal lobe surrounding the previously removed ventricular catheter since prior exam.3.Significant interval decreased size of enhancement along the course of already removed ventricular catheter in the left frontal lobe since prior study.4.Stable thin band of enhancement in the right posterior parietal at the site of previously removed catheter.5.No detectable intracranial abscess, abnormal enhancement of leptomeninges or the ependyma lining the ventricular system.6.Stable size of ventricular system and with maintained midline since prior exam.