Fig. 3From: Spontaneous cerebrospinal fluid fistula secondary to hyper-pneumatized paranasal sinuses and skull base: two case reportsA T2W axial section showing T2 hyperintensity within the right mastoid air cells (red arrow) and middle ear cavity. It is further seen extending to involve the hyper-pneumatized right petrous body. B MRI CISS coronal section showing the T2 hyperintensity within the right mastoid air cells (red arrow)Back to article page