PMC7752266_01
(a) Axial CT of the temporal bones showing a cystic mass of the left squamosal temporal bone disrupting the lateral cortex on the left (red arrow) and a well-pneumatized contralateral squamosal bone (green arrow). (b) T2-weighted axial MRI showing a fluid-filled mass at the left squamosal temporal bone. (c) T1 imaging reveals the lesion to be hyperintense and nonenhancing. (d) Postoperative CT showing complete resection with reconstruction via mesh cranioplasty.
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Subsequent computed tomography (CT) scan of the temporal bone showed a 2.3 cm cystic lesion of the left squamosal temporal bone with disruption of the lateral bony cortex (Figure 1(a)). MRI revealed a nonenhancing, T2 hyperintense lesion (Figures 1(b) and 1(c)).