Table 2:

Patients with suggested recurrence of paraganglioma (surgically treated paragangliomas)

Patient	Localization	Interval Between Surgery and MRI	Maximal Dimension (mm)	Probability of PG		Final Diagnosis (reference standard)
Patient	Localization	Interval Between Surgery and MRI	Maximal Dimension (mm)	C MRI	CE-MRA	Final Diagnosis (reference standard)
1	Vagal	4 years	20	1	2	PG (surgery + pathology)
2	Jugulotympanic	9 months	16	1	2	PG (SD)
3	Vagal	4 years	22	2	2	PG (SD)
4	Jugulotympanic	6 months	41	2	2	PG (SD)
	CBT	6 months	4	1	0	Postoperative scar (follow-up)

Note:—CBT indicates carotid body tumor; C MRI, conventional MR imaging; PG, paraganglioma; SD, surgical data (known tumor residue); 2, probable; 1, uncertain; 0, improbable.