
ENDOCRINE
SYSTEM
Fig.
9.5
Fig.
9.6
Fig.
9.1
Hyperpituitarism.
Gigantism. F/19. Family
photographs showed that this young woman
had
consistently
outgrown
her
twin brother
and was
always
the
biggest child
in
the
school class.
She had a
pituitary adenoma secreting growth
hormone.
The
tumour developed before puberty
and
before
bone
growth
was
complete.
She is
shown with
two
staff
members,
one
short
and one
tall.
Fig.
9.2
Acromegaly. F/36. This
is the
condition that occurs
when
the
growth hormone-secreting tumour develops during
adult
life.
The
photograph shows
the
characteristic malocclusion
of
the
teeth resulting from
the
overgrowth
of the
mandible.
The
patient
had
noticed that
over
the
past
few
years
her
facial
appearance
had
been changing.
Fig.
9.3
Acromegaly.
The
enlarged, spade-shaped hand
of
the
patient
in
Figure
9.2 is
shown
on the
left, with
a
normal hand
for
comparison.
Fig.
9.4
Pituitary
adenoma
in the
pituitary
fossa.
The
majority
of
pituitary adenomas
are
chromophobe tumours
tinctorially. Some cause symptoms because
of
their
compression
of
adjacent structures, whereas others
do so
because
of
their secretion
of
hormones. Immunoperoxidase
stains
make
it
possible
to
identify
the
cells that secrete
the
various
pituitary
hormones (see Figure 11.98).
Fig.
9.5
Hypopituitarism.
Hypogonadism. M/20. There
are
many
causes
for
failure
of the
gonads,
one of
which
is
primary
pituitary failure.
Fig.
9.6
Hypopituitarism.
M/60. Clinical photograph
of a man
with
eunuchoid features resulting from primary hypopituitarism.
He
had no
beard
and had not
developed
any
secondary
sex
characteristics.
He had a
somewhat female
type
of
body habitus
and
a
high-pitched
voice.
185