Surgical treatment and outcome of sterile prostatic cysts in dogs

Objective To describe the surgical treatment and outcome of a large cohort of dogs with sterile prostatic cysts (PCs). Study Design Retrospective study. Animals Forty-four client-owned dogs. Methods Dogs with sterile PCs with at least 6 months of follow-up were included. Clinical variables, type of surgery, complications, recurrences, and outcomes (telephonic interviews or rechecks) were recorded. Results Extra- and intraparenchymal cysts were diagnosed in 29 and 11 dogs, respectively. Four dogs had both types. Extraparenchymal cysts were treated by partial resection and omentalization (n = 22) and complete resection (n = 7). Drainage and intracapsular omentalization were performed in all dogs with intraparenchymal cysts. The four dogs with both types of cyst were treated by omentalization. Resolution was documented in 39/44 dogs (88.6%). Intraoperative complications occurred in one dog (urethral tear). Major complications resulting in death occurred in three dogs (oliguric kidney injury, cardiac arrhythmia, and persisting urinary tract obstruction). Minor complications (n = 10) consisted of temporary urinary incontinence (n = 2), permanent urinary incontinence (n = 5), urinary retention (n = 2), and dysuria (n = 1). Recurrence occurred in two dogs with extraparenchymal cysts. Median long-term follow-up was 528 days (range, 250-730 days). Thirty-nine dogs had no signs associated with prostatic disease at long-term follow-up. Conclusion Partial or complete resection and/or omentalization of sterile PCs led to resolution of clinical signs in most dogs, although postoperative urinary incontinence was frequent. Impact This study is the largest case series relative to canine sterile PCs treated surgically and provides evidence on the prognosis and rate of complications.

Automated summary

This study retrospectively described the surgical treatment and outcomes of a large cohort of dogs with sterile prostatic cysts. Most dogs experienced resolution of clinical signs after partial or complete resection and/or omentalization, although postoperative urinary incontinence was frequent. The study provides evidence on the prognosis and rate of complications associated with canine sterile prostatic cysts treated surgically.