BONES,
JOINTS
AND
CONNECTIVE
TISSUE
Fig. 10.53
Fig. 10.55
Fig. 10.53
Cyst
of the
lateral
meniscus
of the
knee.
F/50.
Fig. 10.54
The
lateral meniscus
has
been removed
and the cut
surface
shows
a
multiloculated cyst containing sticky synovial
fluid.
Fig. 10.55 Synovial cyst
or
ganglion
removed from
near
a
joint.
F/52.
The
thin-walled multiloculated cyst
has
been
cut
open. Some
of the
synovial fluid
it
contained
is
still present.
Fig. 10.56
Benign
subcutaneous
lipoma.
F/27.
The cut
surface
shows
a
lobulated appearance, which
is
accentuated
by
thin bands
of
fibrous tissue.
Fig. 10.57
Intramuscular
myxoma. F/79. This tumour
was
removed from
the
right buttock.
It is
well circumscribed within
the
muscle
and its cut
surface shows
a
glistening appearance.
Fig. 10.58 Liposarcoma. M/34.
The cut
surface
is
multilobulated
and
contains some solid areas
and
some areas
of
haemorrhage.
All
malignant soft-tissue tumours appear
macroscopically
to be
well
encapsulated.
This
leads
surgeons
to
'shell them out'
as one
would remove
a pea
from
a
pod. This
invariably
leaves residual tumour, which
will
regrow
if
further
resection
is not
performed.
Fig. 10.59 Rhabdomyosarcoma. F/44. This tumour
was
removed
from
the
forearm with
a
good
margin
of
muscle around
it. The
tumour
is
brown, with
a
central
area
of
haemorrhage.
Wide local resection, wherever
possible,
is
currently accepted
as
the
treatment
of
choice
for
malignant soft tissue tumours.
Classification
of
malignant soft tissue tumours
has
been greatly
refined
by the use of
immunoperoxidase stains.
224
Fig.
10.54