"MRI "
"T1: typically iso- to hypointense relative to grey matter"
"T2: typically hyperintense; large lesions may show heterogeneous signal"
"T1 C+ (Gd): usually demonstrates homogeneous enhancement, with larger lesions showing cystic degeneration as focal intramural low signal intensity"
Expected headings
"MRI "
"They can occur in any segment of the facial nerve and tend to involve multiple segments. There is a predilection for the region of the geniculate ganglion."
"Imaging characteristics of the tumour itself are the same as those of schwannomas elsewhere: homogeneous enhancement on both CT and MRI when small; heterogeneous when large. The best clue that a schwannoma is of the facial nerve rather than the more common vestibulocochlear nerve (CN VIII) is expansion extending along the facial nerve canal - especially along the labyrinthine segment."
"T2: typically hyperintense; large lesions may show heterogeneous signal"