 There has been persistent reduction in the size of the enhancing pineal region mass which now measures 10 x 10 mm in AP and transverse dimensions, compared to 17 x 14 mm previously, and 7 mm craniocaudal currently which has been remeasured to be 8 mm previously. However, please note that a complete set of thin section pineal region images was inadvertently not obtained. No significant mass effect or ventricular dilatation is noted. Again seen is a prior biopsy tract along the right frontal lobe extending to the frontal horn of the right lateral ventricle but with interval decreased T2/FLAIR hyperintensity and enhancement. Foci of susceptibility are noted within the occipital horns of the lateral ventricles which may be related to the previous biopsy procedure. There are stable areas of FLAIR abnormality within the white matter posteriorly with some areas of cystic encephalomalacia which favors gliosis, less likely enlarged perivascular spaces.There is no evidence of intracranial acute infarct. There is no midline shift or herniation. The major cerebral flow voids are intact. The nasal sinuses and mastoid air cells are clear.
1.Persistent decrease in the size of the pineal region mass.2.Interval decreased T2 hyperintensity and enhancement along the previous biopsy tract coursing through the right frontal lobe.3.Normal sized ventricles.