Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

Chapter Three The Abd omen 427
Fig. 3-230 A, A 1-year-old male Siberian Husky with
chronic hematuria. The retrograde urethrogram
revealed filling of a second tubular structure (black
arrows) that arises near the prostate and extends to
the area of the distal urethra. There are no septations
that would indicate leakage of contrast medium into
the corpus cavernosum urethra. B, A voiding urethrogram
of the distal penis revealed the normal urethral
orifice (open white arrow), contrast medium in
the space between the penis and prepuce (black
arrows), and the termination of the second tubular
structure on the distal prepuce (solid white arrow).
Diagnosis: Incomplete duplicate urethra. C, A 5-
year-old male Lhasa Apso that had a cystotomy for
cystic calculi 1 year prior to examination. The dog
had been pollakiuric and passing “sand” for 1 day.
The survey radiographs were normal. A retrograde
urethrogram revealed a small radiolucent calculus
(solid white arrow) at the ischial arch and a blind
ended extension of the urethra into the soft tissues
(open white arrow). Diagnosis: Radiolucent urethral
calculus and urethral diverticulum.
A
B
C
GENITAL SYSTEM
Contrast techniques, such as vaginography and hysterosalpingography, to visualize
portions of the female genital system have been described but are not used routinely.
51,52,744-748 Vaginography has been used to demonstrate ectopic ureters. Iodinated
contrast is injected into the vagina, allowing for the demonstration of flow into the urethra
and into the ectopic ureter. This technique is also useful to identify vaginal clefts, vaginal
strictures, vaginal masses, and vaginal lacerations (Fig. 3-231). 749-756