 There is a 9 mm AP x 12 mm transverse x 9 mm craniocaudal CSF intensity lesion in the expected location of the pineal gland without associated nodular enhancement.The ventricles and sulci are normal in size. The cerebellar tonsils are low lying, normal in morphology, felt to represent ectopia and not Chiari malformation. There are no masses, mass effect or midline shift. The pituitary gland is normal in size. There is no evidence for intracranial hemorrhage or acute cerebral, brainstem or cerebellar infarction. No diffusion-weighted abnormalities are identified. 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. Coronal images of the temporal lobes demonstrate the temporal horns, hippocampal formations and parahippocampal gyri to be normal in size bilaterally without signal abnormalities, masses, or abnormal enhancement identified within the medial temporal lobes on either side. There is no evidence of mesial temporal sclerosis and there are no foci of heterotopic gray matter.
1.MRI findings consistent with a simple pineal cyst.2.Other wise negative contrast-enhanced MRI without MRI evident abnormality to explain the patient's seizures.