Polyp in urinary bladder of a dog - a case report / Pólipos em vesícula urinária de um cão - relato de caso

Polyps are benign formations rarely found in the urinary tract both in veterinary medicine and human medicine. The etiology was not identified, but it is believed to occur by recurrent infection of the urinary tract, characterizing a disease called polypoid cystitis. It was described in this report a case found in a neutered 11 years-old bitch Cocker Spaniel with a history of hematúria for two years. It was identified a urinary infection by Serratia spp and the ultrassond examination showed two irregular pedunculated masses in the cranioventral portion and thickening of the bladder wall. The animal was underwent parcial cystectomy to remove the masses where it was observed other small formations near the same region; the material was referred to histopathological examination to confirm the diagnosis of bladder polyps. For treatment of disease, in addition to surgical excision, the infection should be treated properly. The prognosis is good, but cases of recurrence may occur especially when the removal is made only from the bladder mucosa.

Pólipos são formações benignas raramente encontradas no aparelho urinário tanto na medicina veterinária como na medicina humana. A etiologia ainda não foi identificada, mas acredita-se que ocorra por infecção recorrente do trato urinário, caracterizando uma doença chamada de cistite polipóide. Descreve-se no presente artigo um caso de pólipo vesical em cadela castrada Cocker Spaniel de 11 anos com histórico de hematúria há dois anos. Foi identificada infecção urinária por Serratia spp e ao exame ultrassonográfico observou-se duas massas pedunculadas irregulares em face cranioventral e espessamento da parede vesical. O animal foi submetido à cistectomia parcial para remoção das massas onde foram observadas várias outras pequenas formações próximas à mesma região. O exame histopatológico confirmou o diagnóstico de pólipos vesicais. Para o tratamento da doença, além da excisão cirúrgica, a infecção deve ser tratada adequadamente. O prognóstico é bom, porém casos de recidivas podem ocorrer especialmente quando a remoção é feita apenas a partir da mucosa vesical.

Giant kidney worm (Dioctophyma renale) infections in dogs from Northern Paraná, Brazil.

This article describes the pathological observations of Dioctophyma renale in dogs from the northern region of the State of Paraná, Brazil. A female, 6-year-old dog, Fila Brasileiro breed and a 16-year-old, male Poodle were diagnosed positive for D. renale during routine necropsy. Clinically, both dogs demonstrated hematuria, and the Poodle had a radiographic diagnosis of prostatic tumor, but neither had a clinical diagnosis of this infection prior to necropsy. Three giant worms were observed in the urinary bladder of the first case and one within the renal pelvis of the other dog. Histological findings were similar in both cases and represented compressive atrophy due to the presence of the nematode. Additionally, aspects of the life cycle, pathogenesis and epidemiology associated with this parasitism in Brazil are also discussed.