49-year-old male with cavernous malformation The CSF spaces are appropriate for the patient's stated age with no midline shift. Redemonstrated is a 7 x 9 mm axial dimension lesion centered in the midbrain with heterogeneous signal centrally on T1 and T2 and a low signal ring. It has a popcorn-like appearance, and other than some minimal intrinsic signal changes, there has been no significant interval change in size or morphology. There is no perilesional edema. There is no associated DVA appreciated.Also redemonstrated is a well-circumscribed heterogeneous mass in the left half of the genu of the corpus callosum measuring 18 x 13 mm axial dimensions It is heterogeneous with predominantly high signal on T1 weighted imaging within its central portion. It has multiple septations and a low signal rim on all pulse sequences. There is extensive susceptibility effect associated with this. It protrudes into the frontal horn of the left lateral ventricle. Other than some minimal intrinsic signal changes, there has been no significant interval change in size or morphology. There is no perilesional edema. There is no associated DVA appreciated.As demonstrated previously, there are multiple punctate lesions scattered in both hemispheres of the brain as well as in the brainstem which are low signal on susceptibility weighted imaging.Redemonstrated are multiple foci of marrow replacement and enhancement scattered throughout the calvarium. 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 clear. The visualized portions of the orbits are intact.
1.Cerebral cavernous malformations in the genu of the corpus callosum and midbrain which are essentially stable.2.Punctate lesions throughout the supratentorial brain and brainstem are nonspecific but could represent small cerebral cavernous malformations.3.Multiple small calvarial lesions are present. These are nonspecific though they most likely represent hemangiomas.