Page 504 - Atlas of Small Animal CT and MRI

494 Atlas of Small Animal CT and MRI

Figure 5.1.3 Retroperitoneal Fluid—Leptospirosis (Canine) CT
9y M mixed‐breed dog with retroperitoneal
fluid. Contrast CT was performed to rule out
urine leakage into the retroperitoneal space.
There is a triangular fluid accumulation
lateral to the right kidney in the retroperi­
toneal space (a: arrowhead). There is an
incidental renal cortical cyst (a: arrow). No
contrast medium was observed to leak into
the peritoneal space during the study.
Definitive diagnosis was leptospirosis with
acute renal failure.

(a) CT+C, TP (b) CT+C, TP

Figure 5.1.4 Mesenteric Edema—Fluid Overload (Feline) CT

(a) CT+C, TP (b) CT+C, TP
8y MC Bengal with ureteral obstruction. Aggressive intravenous fluid therapy had been initiated to treat acute chronic renal failure. The
right kidney is enlarged with a dilated pelvis, and the left kidney is small. There is ground‐glass fluid attenuation within the fat surround­
ing the small intestine, as well as more linear fat stranding surrounding the right kidney (b: arrows). Subcutaneous edema is also present.
On these contrast‐enhanced images, there is very little enhancement of the kidneys, indicating poor renal function.

Figure 5.1.5 Peritoneal Effusion (Canine) CT

6y FS Pit Bull Terrier with bicavitary modified
transudative effusion. Fluid is widely dispersed
within the peritoneal cavity with prominent
collections surrounding the small intestine
and spleen (a,b: arrowheads). Pleural effusion
is also evident in the caudal pleural space
(b: asterisks). The effusion had both low cellu­
larity and low protein and was thought to
have resulted from abnormal hydrostatic or
oncotic forces. A definitive diagnosis was
not reached.

(a) CT+C, TP (b) CT+C, DP
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