Left cerebellopontine angle dural based solid mass extending into and mildly expanding the left internal acoustic canal has remained stable in appearances and dimensions compared to the recent images (not shown in this case). It shows to be isointense on T1 and slightly hyperintense on T2 compared to the cortex, having a vivid and homogeneous contrast enhancement. The lesion encases part of the left anterior inferior cerebellar artery (AICA), including its loop into the internal acoustic meatus. The most inferior aspect of the tumour projects onto the superior margin of the left jugular bulb without invasion, but does extend to the pars nervosa of the jugular foramen with likely encasement of lower cranial nerves. Mild compression of the pons and left middle cerebellar peduncle is noted. The left trigeminal nerve root entry zone and cisternal segment are compressed and mildly displaced by the tumour. Left Meckel's cave is asymmetrically very small in size. Although there is linear enhancement along its roof, it is not occupied or expanded by enhancing tumour. Contralateral internal acoustic meatus and contents appear unremarkable. Inner ear structures appear normal bilaterally. The remainder of the brain is unremarkable, with no intra-axial lesions. Ventricles have normal appearances.
Left maxillary sinus mucosal thickening again demonstrated.