Peer-reviewed veterinary case report
Female guinea pig with urethral stone and diverticulum
By Parkinson, Lily A B et al.·Published in Journal of the American Veterinary Medical Association·2017·View original on PubMed →
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Original publication title: Urethral diverticulum and urolithiasis in a female guinea pig (Cavia porcellus).
- Species:
- rodent
Plain-English summary
A 5-year-old female guinea pig was brought in because she was having trouble urinating and had a lump near her genital area. After some tests, the vet found a pouch in her urethra that contained a stone made of calcium and struvite. The stone was surgically removed, but a few months later, she developed more stones in the same area. The vet then performed a procedure to create a new opening in the urethra to help prevent future stones from forming. Fortunately, she healed well and hasn't had any more stones in the six months since the surgery.
People also search for: guinea pig urinary problems · guinea pig stone removal · female guinea pig lump near genitals
Abstract
CASE DESCRIPTION A 5-year-old sexually intact female guinea pig was evaluated because of mild dysuria and a subcutaneous mass located cranioventral to the urogenital openings. CLINICAL FINDINGS Non-contrast-enhanced CT and surgical exploration of the distal aspect of the urethra revealed a urethral diverticulum with an intraluminal urolith. Analysis revealed that the urolith was composed of calcium carbonate and struvite. TREATMENT AND OUTCOME The urolith was surgically removed and ablation of the urethral diverticulum was attempted. Approximately 3 months later, the guinea pig was reevaluated for masses in the perineal region, and positive-contrast urethrocystography revealed 2 uroliths present in the same diverticulum. Uroliths were manually expressed with the patient under general anesthesia. Approximately 2 weeks later, urethroplasty was performed to create an enlarged stoma with the diverticulum, thereby preventing urine from pooling in the diverticulum and potentially reducing the risk of future urolith formation. The urethroplasty site healed well with no reported complications or evidence of urolith recurrence 6 months after surgery. CLINICAL RELEVANCE Urolithiasis is common in guinea pigs, and urethral diverticulum and intraluminal urolith formation should be considered as a potential differential diagnosis for a subcutaneous mass along the distal aspect of the urethra. Creation of a urethral stoma from a urethral diverticulum via urethroplasty achieved a successful outcome in this patient.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/29154708/