Fig. 3 
Boxplot showing higher maximum standardized uptake value (SUVmax) associated with head and neck paraganglioma (HNPGL). Group 1.0 represents HNPGL primary lesions and group 2 represents non-HNPGL group (sympathetic paragangliomas and pheochromocytomas). Data-points located outside the whiskers of the boxplot are outliers, that is, SUVmax 250 in HNPGL and SUVmax 80 in non-HNPGL group.
