Classification of Shamblin et al for Carotid Body Tumor (CBT, Cervical Paraganglioma)

Shamblin et al reported a classification for carotid body tumor (CBT).

Patient selection: carotid body tumor (CBT)

Shamblin Classification	Anatomic Extent
Shamblin Class I	localized, widening of the carotid bifurcation, minimal attachment to carotid vessels
Shamblin Class II	partially surround the carotid vessels
Shamblin Class III	encase the carotid vessels; may show intimate adherence

Shamblin Class	Surgical Difficulty	Risk of Complications
I	low	minimal
II	moderate	intermediate
III	high, especially with intimate adherence	high

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