Posteromedially, at the level of the hard palate (the superior aspect of the buccal space), the superficial layer of the deep cervical fascia
(SLDCF) extending between the masseter and the buccinator muscle is incomplete, allowing spread of pathology between the buccal space and the masticator space.
Recently, O'Conell et al described a fibrocartilaginous nodule in the posterior aspect of the base of the neck, at the junction of the nuchal ligament and the deep cervical fascia
, that simulated a tumor.
Finally, the intraoral procedure involves incising the posterior pharynx to the deep cervical fascia
, which creates an opportunity for the development of a deep neck space infection.
The retropharyngeal space is the area of loose connective tissue that lies between the middle (buccopharyngeal) and the alar layers of the deep cervical fascia
This potential space extends from the skull base to the level of T1-T2, where the alar layer of the deep layer of the deep cervical fascia
fuses with the anteriorly located visceral portion of the middle layer of the deep cervical fascia