Contrast enhanced CT scan of the brain showing unequivocally 2 hypodense lesions, one in the left basal ganglia and one in the right occipital cortex. There is the possibility of another smaller left sided occiptal cortex. These lesions do not have the appearance of abscesses, but rather of ischaema.
1 Axial computed tomography (CT) scans of the frontal sinus.
A: due to the long lasting pressure of mucus, the bone of the anterior wall of frontal sinus is thinned out and elevated anteriorly, forming a bulge. B: same situation as depicted in fig A: the posterior bony wall of frontal sinus is thinned out and extremely elevated posteriorly towards the frontal lobe of the brain. As depicted on the scan, a thin bony layer covering the dura could be recognized intraoperatively
