IgG4-Related Perineural Disease

Table 3

Characteristics of perineural lesions.

Case	Affected nerve	Performed imaging examinations	Size	Shape	Involved nerve
1	Right supraorbital nerve	CT (P), MRI (P)	15 mm	Round	Not visible
	Right infraorbital nerve	CT (P), MRI (P)	25 mm	Lobular	Not visible
	Left infraorbital nerve	CT (P), MRI (P)	26 mm	Lobular	Not visible
	Left optic nerve	CT (P), MRI (P)	12 mm	Lobular	Identifiable (MRI)
2	Left optic nerve	CT (P), MRI (CE)	14 mm	Lobular	Identifiable (MRI)
3	Left supraorbital nerve	CT (P), MRI (P)	10 mm	Round	Not visible
	Left optic nerve	CT (P), MRI (P)	10 mm	Lobular	Identifiable (MRI)
4	Right infraorbital nerve	CT (P), MRI (CE)	8 mm	Round	Not visible
	Right optic nerve	CT (P), MRI (CE)	30 mm	Lobular	Identifiable (MRI)
5	Left C6 nerve	CT (P), FDG-PET	9 mm	Round	Not visible
	Right L5 nerve	CT (CE), FDG-PET	13 mm	Round	Not visible
	Right S1 nerve	CT (CE), FDG-PET	13 mm	Round	Not visible
6	Right supraorbital nerve	CT (P), MRI (CE)	8 mm	Round	Not visible
	Right infraorbital nerve	CT (P), MRI (CE)	12 mm	Round	Not visible
	Left supraorbital nerve	CT (P), MRI (CE)	13 mm	Round	Not visible
	Left infraorbital nerve	CT (P), MRI (CE)	12 mm	Round	Not visible
	Right L5 nerve	CT (CE)	14 mm	Round	Not visible
	Left L5 nerve	CT (CE)	19 mm	Round	Not visible
	Right S1 nerve	CT (CE)	9 mm	Round	Not visible
	Left S1 nerve	CT (CE)	13 mm	Round	Not visible
7	Left greater auricular nerve	None	15 mm*	Round*	Not analyzed

P: plain; CE: contrast-enhanced; *macroscopically examined on the resected specimen.