One patient had invasion of the striated muscle and recurrent laryngeal nerve in addition to invasion of the ipsilateral prevertebral muscle
and arterial sheath.
Of the 26 nodes with a discordant finding, 25 were negative on PET/CT but positive on enhanced CT; they included 13 nodes with low FDG uptake, 9 close to the primary tumor (figure 1), 2 confluent RLNs and 1 adjacent to physiologic FDG-avid prevertebral muscle (table 3).
adjacency to the physiologic FDG-avid prevertebral muscle.
A 3 cm thin metallic wire was found embedded within the prevertebral muscle
which was removed (Fig 3).
Evaluation of prevertebral muscle
invasion by squamous cell carcinoma.
The inclusion criteria were parapharyngeal space tumor and/or main tumor body (exceeding 50%) located in parapharyngeal space confirmed by imaging; no main cervical vascular invasion; lateral boundary not exceeding mandibular ramus; no prevertebral muscle
invasion; and no contraindications to surgery.
1) The anatomic components of the PVS in the suprahyoid neck include the following: Prevertebral muscles
(longus colli capitus), vertebral body, cervical disk, spinal canal, vertebral artery and phrenic nerve (Figure 5A).
The prevertebral fascia separates the visceral compartment of the neck containing the pharynx, trachea, larynx and the thyroid gland from the cervical vertebrae and the prevertebral muscles
The back wall is delineated by the aponeurosis and the C1, C2 and C3 prevertebral muscles
A retropharyngeal abscess is identified by a low-attenuation fluid collection that causes substantial anterior displacement of the posterior wall of the pharynx from the prevertebral muscles
Calcific tendinitis of the prevertebral muscles
is a rare clinical entity.
It is defined superiorly by the temporal bone, posteriorly by the vertebrae and prevertebral muscles
including their fasciae, and laterally by the mandible, the posterior belly of the digastric muscle and the medial pterygoid muscle.