Abstract A 12‐year‐old, male intact, Papillon dog was presented following trauma from a motor vehicle accident. On arrival, the dog was laterally recumbent with neurological dysfunction (modified Glasgow coma scale 12) and multiple injuries, including right hip luxation and suspected haemorrhage. Despite intensive supportive care, the patient deteriorated with worsening azotaemia, oliguria, coagulopathy and declining neurological status (modified Glasgow coma scale 8–9), leading to euthanasia. Postmortem examination revealed soft tissue haemorrhage, right coxofemoral luxation, and a ureteral mass associated with ipsilateral renal atrophy. Histopathology identified the mass as a fibroepithelial polyp and documented chronic renal pathology, including glomerulosclerosis, tubular atrophy and interstitial fibrosis. Additional findings included hepatic lipofuscinosis and splenic lymphoid hyperplasia with necrosis. The fibroepithelial polyp was identified as the cause of chronic renal injury and haematuria. This case highlights an uncommon diagnosis in dogs, emphasising the importance of considering ureteral fibroepithelial polyps in cases of unexplained haematuria or renal atrophy, even when diagnosed only at postmortem.
Talbot et al. (Wed,) studied this question.