Lower urinary tract transitional cell carcinoma in cats: Clinical findings, treatments, and outcomes in 118 cases.
BACKGROUND
Lower urinary tract transitional cell carcinoma (TCC) is an important but rarely described disease of cats.


OBJECTIVES
To report the clinical characteristics, treatments, and outcomes in a cohort of cats with lower urinary tract TCC and to test identified variables for prognostic relevance.


ANIMALS
One-hundred eighteen client-owned cats with lower urinary tract carcinoma.


METHODS
Medical records were retrospectively reviewed to obtain information regarding clinical characteristics, treatments, and outcomes. Recorded variables were analyzed statistically.


RESULTS
Median age of affected cats was 15 years (range, 5.0-20.8 years) and median duration of clinical signs was 30 days (range, 0-730 days). The trigone was the most common tumor location (32/118; 27.1%) as assessed by ultrasound examination, cystoscopy, or both. Treatment was carried out in 73 of 118 (61.9%) cats. Metastatic disease was documented in 25 of 118 (21.2%) cats. Median progression-free survival and survival time for all cats were 113 days (95% confidence interval [CI], 69-153) and 155 days (95% CI, 110-222), respectively. Survival increased significantly (P < .001) when comparing cats across the ordered treatment groups: no treatment, treatment without partial cystectomy, and treatment with partial cystectomy. Partial cystectomy (hazard ratio [HR], 0.31; 95% CI, 0.17-0.87) and treatment with nonsteroidal anti-inflammatory drugs (HR, 0.55; 95% CI, 0.33-0.93) were significantly associated with longer survival times.


CONCLUSIONS AND CLINICAL IMPORTANCE
The results support treatment using partial cystectomy and NSAIDs in cats with TCC.
['Griffin|Maureen A|MA|', 'Culp|William T N|WTN|https://orcid.org/0000-0001-6132-156X', 'Giuffrida|Michelle A|MA|', 'Ellis|Peter|P|', 'Tuohy|Joanne|J|', 'Perry|James A|JA|', 'Gedney|Allison|A|', 'Lux|Cassie N|CN|', 'Milovancev|Milan|M|', 'Wallace|Mandy L|ML|', 'Hash|Jonathan|J|', 'Mathews|Kyle|K|https://orcid.org/0000-0003-3431-6049', 'Liptak|Julius M|JM|', 'Selmic|Laura E|LE|', 'Singh|Ameet|A|', 'Palm|Carrie A|CA|https://orcid.org/0000-0003-1445-5113', 'Balsa|Ingrid M|IM|', 'Mayhew|Philipp D|PD|', 'Steffey|Michele A|MA|', 'Rebhun|Robert B|RB|', 'Burton|Jenna H|JH|', 'Kent|Michael S|MS|']
D000818:Animals D000894:Anti-Inflammatory Agents, Non-Steroidal D002295:Carcinoma, Transitional Cell D002371:Cat Diseases D002415:Cats D015331:Cohort Studies D015653:Cystectomy D012189:Retrospective Studies D016896:Treatment Outcome D001749:Urinary Bladder Neoplasms
cat cystectomy bladder neoplasia urethra