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. 2014 Jul 17;35(5):795–819. doi: 10.1210/er.2014-1026

Table 4.

Classifications of HNPGLs

Classification Localization Primary Subclass Secondary Subclass Tertiary Subclass
Shamblin's Carotid Body PGL I: splaying of the carotid bifurcation with little attachment to the carotid vessels II: partial involvement of the carotid vessels III: complete involvement of the carotid vessels
Netterville's Vagal PGL A: confined to the neck B: in contact with the jugular foramen C: extended into or beyond the jugular foramen with or without intracranial extension
Fisch and Mattox's Tympanic PGL A: limited to the middle ear cleft B: limited to the tympanomastoid compartment
Jugular PGL C1: located in the jugular foramen, erosion of the carotid foramen C2: vertical segment of the carotid canal involved
C3: horizontal segment of the carotid canal involved
C4: foramen lacerum and cavernous sinus involved
De: intracranial extradural extension (De1/2 depending on the displacement of the dura)
Di: intracranial intradural extension (Di1/2/3 depending on the depth of invasion into the posterior cranial fossa)