Page 556 - Atlas of Small Animal CT and MRI

546 Atlas of Small Animal CT and MRI

Figure 5.4.10 Leiomyosarcoma—Colon (Feline) CT
9y FS Domestic Mediumhair with hematoche-
zia. Images are through the distal colon and
are ordered from cranial to caudal. There is
a large, eccentric, heterogeneously contrast‐
enhancing mass originating from the colonic
wall (a: arrows). More caudally, the mass
compresses the colonic lumen, which is iden-
tified by gas and mineral‐opacity feces (b–d).
Surgical excisional biopsy confirmed a diag-
nosis of colonic leiomyosarcoma.
(a) CT+C, TP (b) CT+C, TP

(c) CT+C, TP (d) CT+C, TP

Figure 5.4.11 Gastrointestinal Stromal Tumor—Cecum (Canine) CT
7y FS Golden Retriever with progressive abdom-
inal distension. There is an extremely large mass
in the right abdomen, causing displacement
of the remainder of the abdominal viscera to
the left side. The mass is heterogeneously and
peripherally contrast enhancing. A region of
bowel containing gas, identified as the cecum,
is visible in the dorsal and cranial aspect of
the mass (a,c: arrow). The mass was surgically
excised and histologically diagnosed as a
gastrointestinal stromal tumor (d).
(a) CT+C, TP (b) CT+C, TP

(c) CT+C, DP (d) GP

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