Clinical question: Rule out mass lesion involving left cranial nerve VI. Signs and symptoms: Left cranial nerve VI palsy, facial numbness and paresthesia. Pre- and post enhanced brain MRI:Examination is performed utilizing the cranial nerve protocol.Negative diffusion weighted series.Examination is degraded due to mild motion artifact however within this limitation there is no evidence of signal abnormality or abnormal enhancement of the cranial nerves.Unremarkable cerebral cortex, cortical sulci, ventricular system, CSF spaces and brain myelination.Unremarkable calvarium and images through the skull base.Unremarkable bilateral cavernous sinuses and bilateral Meckel's caves.Unremarkable images through the orbits and including coronal fat sat post enhanced series.The signal void of major intracranial arterial branches are identified and unremarkable. X line the signal intensity of intracranial venous sinuses are within normal and the normal pattern of enhancement.
Negative pre and post enhanced brain MRI.