Prostatic cavitary lesions containing urine in dogs

Abstract

In dogs, 18·4% (95% confidence interval, 10·9 to 28·1%) of the prostatic cavitary lesions contain urine. Measurement of creatinine within the prostatic cavity fluid is a helpful tool in diagnosing a presurgical intra-prostatic urethral fistulation, and these dogs tend to require a more aggressive surgical therapy than percutaneous drainage alone.

Reproductive System

“…2-6) may occur as multiple, small cysts associated with androgen-dependent benign hyperplasia as well as large retention cysts within the prostate tissue. Prostatic cavitary lesions containing urine (urinary cysts) due to intraprostatic urethral fistulation have been reported (Bokemeyer et al, 2011). Except for hyperplasia-associated cysts, prostatic cysts account for 2% to 5% of prostatic abnormalities (Dorfman and Barsanti, 1995).…”

Urine‐filled prostatic cavitary lesion as a cause of urinary incontinence in a juvenile male dog

“…9 24 The presence of prostatic urethral defects has been previously reported in dogs with prostatic cavitary lesions containing urine and treated surgically with suturing of the defects and omentalisation of the cavitary lesions. 11 However, the mean age of dogs in this study was 8.6 years (range 5-13 years), ultrasonography was the only imaging modality used and preoperative and postoperative clinical signs were not described. In the case reported here, debridement and suturing of the urethral defects was performed in order to decrease the likelihood of ongoing urine leakage and recurrent incontinence.…”

“…In order to confirm the nature of the fluid within the cavitary lesion, the creatinine and potassium concentration of the fluid should have been measured and compared with the equivalent peripheral blood concentrations and their ratios calculated; a creatinine ratio of more than 2:1 and potassium ratio of more than 1.4:1 would be consistent with urine 11 23. In the reported case, it was assumed that the fluid contained in the prostatic cavitary lesion was urine due to the imaging findings, which were later confirmed intraoperatively.…”

“…Percutaneous ultrasound‐guided needle aspiration of prostatic cavitary lesions has been previously described in the literature 10 11. Due to the nature of the lesion identified following the above diagnostic steps, and in particular the clear communication of the prostatic lesion with the urethra, a high risk of recurrence was considered likely following percutaneous ultrasound‐guided needle aspiration of the lesion, and therefore surgical management was performed.…”

Clinical approach to prostatic diseases in the dog

“…The key role in this pathology is probably played by a metabolic shift that promotes the production of DHT due to increase of 5α-reductase activity (Brendler et al, 1983;Gobello & Corrada, 2002). Intraparenchymal cysts are frequently associated to BPH and are formed when hyperplastic glandular ducts become obstructed causing accumulation of prostatic fluid (Barsanti & Finco, 1986) or urine when a communication with the urethra is present (Bokemeyer et al, 2011).…”