 There are multiple foci of susceptibility abnormality throughout both infratentorial and supratentorial brain, including at the cervicomedullary junction, with imaging features consistent with innumerable cavernous malformations. The largest of these is centered in the right thalamus measuring 16 mm AP x 15 mm transverse x 12 mm craniocaudal (as measured on T2 images). This larger lesion demonstrates heterogeneous internal signal characteristics, with a hypointense rim. There is no associated mass effect or perilesional edema. There are no associated developmental venous anomalies.The ventricles and sulci are normal in size. The cerebellar tonsils are in normal position. There is no midline shift. The pituitary gland is normal in size. There is no evidence for acute cerebral, brainstem or cerebellar infarction. There are no extraaxial fluid collections or subdural hematomas. Flow voids are present within the major vessels indicating patency. The paranasal sinuses and mastoid air cells are clear. There is no abnormal enhancement within the brain.
1.There are multiple cerebral cavernous malformations throughout the supratentorial and infratentorial brain, including at the cervicomedullary junction.2.The largest of these is centered in the right thalamus measuring 16 mm AP x 15 mm transverse x 12 mm craniocaudal (as measured on T2 images). This larger lesion demonstrates heterogeneous internal signal characteristics, with a hypointense rim. There is no associated mass effect or perilesional edema. 