Comparison has been made with the previous scan.
T2 weighted scans showed an extension of the abnormal signal within the right temporal and occipital lobes, particularly into the parahippocampal gyrus and the white matter immediately surrounding the occipital horn.
The white matter extension now involves the right side of the splenium of the corpus callosum.
Postcontrast scans show medial extension of contrast enhancement to the level of the right occipital horn, which the contrast enhancing tissue encases.
Mass effect remains minimal. Spectroscopy in the enhancing areas shows only minimal increase in choline to creatine ratio (not illustrated above), but does show very high lactate peaks.
There is very slight increase in relative cerebral blood volume in the enhancing tissue.
Conclusion: The extension into the splenium of the corpus callosum and apparent slight increase in cerebral blood volume is more suggestive of recurrent tumour.