"location: between the visceral and prevertebral fascia, dividing radiological retropharyngeal space in a coronal plane"
"boundaries:"
"Superiorly, the alar fascia extends until the level just above the C1 anterior tubercle, where it either fuses with prevertebral fascia posteriorly1, or narrowed to a median raphe before transitioning to loose areolar tissue 2. It does not connect to the skull base as a distinct layer."
"Alar fascia is not usually resolved on imaging; however, it may be visible on contrast-enhanced CT as a thin membrane in the retropharyngeal space in patients with extensive regional oedema e.g. post-radiation therapy 2."
Expected headings
"Contents"
"Alar fascia is not usually resolved on imaging; however, it may be visible on contrast-enhanced CT as a thin membrane in the retropharyngeal space in patients with extensive regional oedema e.g. post-radiation therapy 2."