Known solitary cavernoma. Surveillance examination. Within the peripheral right pons there is a mixed T1 and T2 bright lesion with foci of internal and peripheral susceptibility compatible with the stated history of a cavernous malformation. This measures 1.7 x 1.0 x 1.5 cm (AP by transverse by CC). There is no adjacent edema or other findings to suggest acute hemorrhage. Postcontrast images demonstrate adjacent serpiginous vessels likely representing an associated developmental venous anomaly.No additional cavernomas are identified. Punctate focus of increased T2 signal in the left parietal lobe subcortical white matter without associated susceptibility or enhancement may represent a small focus of small vessel ischemic change. The ventricles and basal cisterns are normal in size and configuration. The expected intracranial vascular flow voids are present.The paranasal sinuses are clear. The visualized mastoid air cells are clear. The orbits are unremarkable.
Single cavernous malformation in the right lateral pons measuring 1.7 x 1.0 x 1.5 cm with an associated developmental venous anomaly. No additional cavernomas are identified.