PMC5362878_01
Examination of the penis under sedation revealed it to be prolapsed and extremely erythematous and friable (reproduced by kind permission of Kelly Bowlt)
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The cat was anaesthetised and examination of the penis revealed it to be prolapsed and extremely erythematous and friable (Figure 1).
Contrast retrograde urethrocystogram, lateral projection (t = 0). An area of extravasation of the contrast medium can be seen cranioventrally to the distal urethra (white arrow). A focal narrowing is visible in the mid-pelvic urethra at the level of the prostate gland (black arrow), which is normal anatomy. The urinary bladder is normal in shape and filling appropriately with contrast medium
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A contrast retrograde urethrocystogram (Figure 2), taken immediately postadministration of contrast medium, showed an area of extravasation of the contrast medium that could be seen cranioventrally to the distal urethra.
Contrast retrograde urethrocystogram, lateral projection (t = 2 mins). The internal (dorsally) and external (ventrally) pudendal veins drain blood from the penis. The internal pudendal joins the internal iliac vein, and the external pudendal drains into the external iliac. The iliac veins on each side unite to form the common iliac vein, and the two common iliac veins then converge into the caudal vena cava. A = dorsal penile vein; B = scrotal vein; C = internal pudendal vein; D = external pudendal vein; E = branch of the femoral vein; F = internal iliac vein; G = external vein; H = caudal vena cava
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Two minutes later a second contrast retrograde urethrocystogram was acquired (Figure 3), which showed that the contrast medium had extravasated from the urethra.
Contrast retrograde urethrocystogram, lateral projection (t = 10 mins). Contrast medium is present within the renal pelves (black arrow) demonstrating renal excretion and indicating that the contrast uptake had been within the vasculature
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At 10 mins post-contrast injection, a third radiograph was taken (Figure 4), which showed contrast medium within the renal pelves (renal excretion), indicating that the contrast uptake had, indeed, been within the vasculature.
A perineal urethrostomy was performed using a previously described technique (Tobias) (reproduced by kind permission of Kelly Bowlt)
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A routine perineal urethrostomy was performed using a previously described technique (Figure 5).