Renal cysts (multicystic dysplastic kidney disease) are a rare benign form of renal neoplasia characterized by intramedullary or intracortical cyst-like lesions.
Affected dogs often present with a protracted history of hematuria. Depending on the cyst size, a palpable mass may be evident in the dorsal abdomen, sometimes with concurrent pain and tenderness in the loin region.
Ultrasonic imaging usually reveals small kidneys with a loss of normal architecture and poor corticomedullary distinction. The cyst often appear as anechoic spaces with sharply demarcated, thin-walled, round structures containing anechoic fluid.
Diagnosis can be made presumptively on ultrasonographic findings of renal contour distortion and presence of hyperechogenic fluid-filled cysts, which may be present unilaterally or bilaterally.
- Kim J et al (2011) Multicystic dysplastic kidney disease in a dog. Can Vet J 52(6):645-649
- Kitshoff AM et al (2011) Bilateral multiple cystic kidney disease and renal cortical abscess in a Boerboel. J S Afr Vet Assoc 82(2):120-124