Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

Chapter Three The Abd omen 441
Fig. 3-252 A 9-year-old male
Norwegian Elkhound with
stranguria for 2 weeks. The lateral
radiograph revealed mild prostatomegaly
(solid black arrow). The sublumbar
lymph nodes show no
enlargement, but there is a marked
periosteal response involving the
ventral aspect of L6 (open black
arrow). Diagnosis: Prostatic adenocarcinoma
with spinal metastasis.
Fig. 3-253 An 8-year-old male
Brittany Spaniel with blood dripping
from the penis for 1 week and vomiting
and anorexia for 3 days. The
lateral radiograph revealed marked
prostatomegaly that displaced the
bladder (black b) cranially. Close
scrutiny revealed streaks of tissue
density in the normally homogenous
fat density between the prostate and
bladder (white arrows). This usually
is indicative of the spread of inflammatory
cells through the capsule of
an inflamed prostate. Differential
diagnoses include prostatitis, prostatic
neoplasia, or benign prostatic
hyperplasia. Diagnosis: Prostatitis.
either a normal study or a false-negative result (i.e., one in which a cystic prostatic
structure does not communicate with the urethra). 862 Prostatic abscess, cyst, and
necrotic tumor may produce cavitation within the prostate, which can be filled
with contrast during a contrast urethrogram. A small amount of contrast may reflux
into a normal prostate. The finding of contrast within the prostate is therefore nonspecific.
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