

8
8
CS
Mass
DD: neurogenic tumor /
paraganglioma
CS
Mass
paraganglioma
© Bert De Foer, MD, Belgium
CS
: “elevator space”
Spaces defined by DCF
Parapharyngeal
PPS
Parotid
PS
Pharyngeal mucosal
PMS
Masticator
MS
Carotid
CS
Retropharyngeal / Danger
RPS / DS
Perivertebral
PVS
Retropharyngeal space (RPS)
Contents
Fat
Lymph nodes
–
lateral retropharyngeal
(Rouvière)
CT/MR cannot
differentiate from
“danger space”
Retropharyngeal nodes
C1 – C3 level