Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

404 Small Animal Radiolo g y and Ultrasono graphy
Fig. 3-196 A, A 13-year-old female Siamese cat that was hit
by a car. There is a loss of contiguity of the ventral abdominal
stripe (rectus abdominis muscle) with a hazy density in the
tissue swelling ventral to it (white arrows). The bladder is not
identified in the abdomen. B, The cystogram portion of the
excretory urogram revealed that the bladder, along with some
gas-containing loops of small intestine (white arrow), is incorporated
into the hernia sac. Diagnosis: Urinary bladder and
small intestine incorporated in traumatic inguinal hernia.
A
Fig. 3-197 A 6-year-old female
Miniature Poodle that was hit by a
car. Survey radiographs revealed a
right coxofemoral luxation and generalized
loss of detail throughout the
abdomen. Attempts to catheterize
the bladder were unsuccessful. The
excretory urogram revealed that the
kidneys, ureters, and bladder were
intact. However, the bladder,
although normally distensible, is
severely displaced cranially.
Diagnosis: Avulsion of the urethra
from the urinary bladder distal to
the urinary bladder sphincter.
B
trigone of the bladder will result in the bladder retaining its normal size and shape but
being cranially displaced within the abdomen (Fig. 3-197). Enlargement of the prostate can
displace the bladder cranially. 689-691
Cystography. Evaluation of a cystogram should be performed by paying special attention
to the location, shape, and integrity of the bladder; the thickness and regularity of the blad-