"type I: between the platysma and sternocleidomastoid muscle"
"type II: between sternocleidomastoid muscle and submandibular gland, lateral to the carotid sheath"
"type III: extends between the internal and external carotid arteries"
"type IV: medial to the carotid sheath, in the parapharyngeal space or pharyngeal mucosal space opening into the oropharynx"
"type I: between the platysma and sternocleidomastoid muscle"
"type II: between sternocleidomastoid muscle and submandibular gland, lateral to the carotid sheath"
"type III: extends between the internal and external carotid arteries"
"type IV: medial to the carotid sheath, in the parapharyngeal space or pharyngeal mucosal space opening into the oropharynx"