Disorder of brain, unspecified [G93.9], Reason for Study: ^Reason: eval ventricular mass; compare to previous mri scans History: brain mass The exam is limited due to patient intolerance.Previously seen proximal third ventricle mass lesion with blood products is again demonstrated with decreased size and decreased the surrounding edema. The lesion show low signal intensity rim on T2 weighted image indicating hemosiderin deposition as well as central high signal intensity on T1 and T2-weighted images indicating late subacute stage of hemorrhage. In particular, the superior aspect of the lesion appears to be multi-compartmentalized on FLAIR/T2 images, thus suggest the diagnostic possibility of cavernous malformation of the 3rd ventricle. Again the differential diagnosis include papillary craniopharyngioma, choroid plexus papilloma, meningioma with hemorrhages or hemorrhagic colloid cyst. The ventricles, sulci and cisterns are symmetric and unremarkable. There is no evidence of acute ischemic lesion.The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.
Interval decrease in size of the 3rd ventricle hemorrhagic mass lesion with decreased surrounding edema since prior scan. Interval demonstration of multi-compartment appearance suggest possible diagnosis of cavernous malformation with differential diagnosis of papillary craniopharyngioma, choroid plexus papilloma, meningioma with hemorrhages or hemorrhagic colloid cyst. 