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Squamous cell carcinoma of external auditory canal lacking epidermal growth factor receptor protein overexpression, in an elderly Omani with oculocutaneous albinism treated with palliative radiotherapy.
[oculocutaneous albinism]
We
report
a
case
of
squamous
cell
carcinoma
of
external
auditory
canal
in
an
Omani
man
with
oculocutaneous
albinism
.
The
disease
mimicked
inflammatory
process
revealing
positive
cultures
for
various
microorganisms
during
the
course
of
his
illness
.
He
was
eventually
biopsied
to
rule
out
atypical
infective
process
or
presence
of
malignancy
.
He
was
staged
as
T
4
N
0
M
0
and
treated
with
radical
doses
of
palliative
radiation
therapy
which
was
very
well
tolerated
and
resulted
in
a
complete
resolution
of
disease
clinically
and
a
major
soft
tissue
response
on
radiological
imaging
.
Another
unique
finding
was
the
absence
of
epidermal
growth
factor
receptor
(
EGFR
)
protein
overexpression
in
the
tumour
specimen
.
More
than
90
%
of
mucosal
squamous
cell
carcinoma
(
SCC
)
involving
the
head
and
neck
region
overexpress
the
EGFR
protein
in
normal
skin
patients
.
SCC
is
the
predominant
cutaneous
malignancy
in
albinos
,
and
the
presence
of
EGFR
protein
overexpression
in
cutaneous
SCC
is
believed
to
be
56
-
58
%
in
normal
skin
patients
.
The
scientific
literature
is
scarce
on
reporting
incidence
of
EGFR
overexpression
in
either
cutaneous
or
mucosal
SCC
in
albinos
,
and
it
remains
to
be
defined
whether
being
albino
is
the
cause
for
its
absence
.