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BASE OF THE TONGUE
OROPHARYNX: SUBSITES
KEY POINTS:
site, size and relation with the midline
submucosal extension
extension to the mobile tongue and oral cavity
extension to the larynx (preepiglottic space, supraglottis)
N status (levels II, III, IV)
M status
Often
poorly
differentiated (up to 60%)
Presentation:
60%
of SCC have
nodal involvement
,
bilateral
in
30%
(levels
II-III, IV)
T1-2 present at least with one cervical metastasis, (up to 20% with
bilateral N)
30-50% with uncontrolled base of tongue SCC will present
M
Symptoms
: sore throat and dysphagia
Difficult to detect
: often becomes clinically evident in advanced stage
(submucosal mass): this due to absence of pain fibers
mercoledì 29 giugno 16