Descreveram-se os achados clínicos e patológicos de um caso de displasia renal em um cão da raça Rotweiller com oito meses de idade. O animal apresentou vômitos, emagrecimento, polidpsia e poliúria. Houve elevação sanguínea de creatinina, cálcio e da fosfatase alcalina. À necropsia, notaram-se os rins diminuídos de tamanho, com estruturas císticas proeminentes sobre a superfície natural do órgão e, ao corte, firmes e com estruturas císticas distribuídas pelo parênquima. Na avaliação histológica, havia glomérulos imaturos, fibroplasia intersticial e dilatação cística tubular.

In this study we describe the clinical and pathological findings of a case of renal dysplasia in a dog from the Rottweiler breed at 8 months of age. The animal presented vomiting, weight loss, polydipsia and polyuria. There was an increase of blood creatinine, calcium, and alkaline phosphatase. At necropsy it was noted that the kidneys were reduced in size, with prominent cystic structures on the natural surface of the body and the cutting and firm with cystic structures distributed throughout the parenchyma. The histological evaluation was immature glomeruli, interstitial fibroplasia and tubular cystic dilation.