Clinical question: Prostate cancer and headaches and abnormal bone scan in occipital area. Signs and symptoms: As above. Pre-and post-enhanced brain MRI:Negative diffusion weighted series.Examination demonstrates normal anatomical morphology and signal intensity brain parenchymal on all MRI sequences.Unremarkable cerebral cortex, cortical sulci, ventricular system, CSF spaces and brain myelination.The signal void of major intracranial arterial branches are identified.The signal intensity of the intracranial venous sinuses are within normal.Post enhanced images are negative for any abnormal parenchymal or leptomeningeal enhancement.Unremarkable images through the orbits in including axial fat sat post enhanced series.Calvarium demonstrate no convincing evidence of an enhancing metastatic lesion as was seen on prior bone scan. There is also no detectable focus of bony expansion or abnormal epidural enhancement.All paranasal sinuses and bilateral mastoid air cells and middle ear cavities demonstrate normal pneumatization signal patterns.
1.Pre-and post enhanced brain MRI demonstrate no detectable intracranial abnormalities.2.There is no convincing evidence of an abnormal calvarial enhancement to suggest metastatic lesion.3.Unremarkable images through the orbits, paranasal sinuses and mastoid air cells.