52 years Male (DOB:4/26/1963)Reason: intracranial abscess History: AMSPROVIDER/ATTENDING NAME: DAVID O MELTZER DAVID O MELTZER MRI of the brainNo diffusion weighted abnormalities are appreciated. The examination is degraded due to patient motion artifact which may obscure subtle abnormalities.There appears to be a small extra-axial collection adjacent to the left sigmoid sinus and left tentorial leaf measuring 7 x 19 mm axial dimensions. It is high signal on FLAIR MRI, low signal on T1 and low signal on diffusion-weighted imaging. It was present on prior exams.The CSF spaces are appropriate for the patient's stated age with no midline shift. No intracranial hemorrhage is identified. No edema is identified within the brain parenchyma.The left sigmoid sinus flow void is absent. This was also the case on the prior exam. Normal vascular flow voids are present in the distal carotid and vertebral arteries, the basilar artery and the proximal anterior, middle and posterior cerebral arteries as well as the internal cerebral veins and superior sagittal sinus.The visualized portions of the paranasal sinuses are clear. The visualized portions of the mastoid air cells are partially opacified (left more than right). The visualized portions of the orbits are intact.
1.There is no evidence for acute ischemic cerebral infarction.2.Findings suggest occlusion of the left sigmoid sinus and jugular vein. This is been present on prior exams.3.There is a small fluid collection present adjacent to the left sigmoid sinus and left tentorial leaf. It is not clearly delineated on this exam. It is not clear what this represents. It has not changed since prior exams.4.The exam is markedly degraded due to patient motion. This may obscure more subtle abnormalities.5.The patient was not able to cooperate for MR angiogram. Perhaps if clinically appropriate a CT angiogram may be of value.6.There is opacification of mastoid air cells and middle ears which has gradually decreased since earlier exams.