THE
MOUTH
87
an
adequate view
of the
uvula, posterior wall
of the
pharynx
and the
tonsils. Some
of the
mucosal lesions men-
tioned already also involve
the
palate
and
should
be
looked for.
Purpuric
spots
may be
seen scattered
on the
mucous
membrane
of the
palate
in any
condition causing throm-
bocytopenia.
In
some systemic disorders, such
as
rheuma-
toid
arthritis,
the
association
may
spring
to
mind
if
these
spots
are
seen,
as in
this patient with Felty's syndrome
(2.100).
Blood blisters with
a few
purpuric
spots
on the
palate (2.101)
may be
caused
by
heat burn
or by
trauma
from
a
fork
or fishbone but
their presence
may
also
be an
important clue
to an
unsuspected acute leukaemia
or
aplastic
anaemia.
The two
conditions
are
frequently asso-
ciated with small haematomas
on the
buccal mucosa
(2.102) from trauma caused
by the
neighbouring teeth.
Streptococcal pharyngitis
and
diphtheria (rare today)
cause
an
exudative pharyngitis with yellowish-white
patches covering
the
tonsils
and
fauces. Sometimes
the
former
may
herald infectious
mononucleosis
(2.103).
Nodular involvement
of the
pharynx (2.104)
is
sugges-
tive
of
Wegener's granulomatosis, particularly when
it is
associated with
haematuria,
vasculitis and/or pulmonary
infiltrations.
Perforation
of the
palate
is one of the
legacies
of
con-
genital syphilis
and it may be
seen
in an
adult
(2.105)
who
may
have some
of the
other features
of the
disease (see
1.323,1.324,
3.52, 3.53
and
11.52).
2.102
A
buccal
haematoma
in a
patient
with
acute
leukaemia
2.103
Streptococcal
exudative
pharyngitis
2.104
Wegener's
granulomatosis:
granulomatous
nodules
in the
fauces
and
pharynx
2.105
Perforation
of the
soft
palate