Case Study

Pelvic ectopic kidney in an 11 year old FS cat

An 11-year-old SF cat was presented for evaluation of a possible caudal abdominal mass. Blood work was within normal limits.

An 11-year-old SF cat was presented for evaluation of a possible caudal abdominal mass. Blood work was within normal limits.

Sonographic Differential Diagnosis

Pelvic positioning of the right kidney, ectopic position. Minor, chronic degenerative changes to the left kidney. Potential concurrent urinary tract infection is possible and urinalysis would be indicated. Urine culture and sensitivity would be warranted, as well as blood pressure measurements. There was no evidence of neoplasia noted.

Image Interpretation

The urinary bladder, trigone and pelvic urethra presented normal wall thicknesses with anechoic urine and normal tone. No uroliths or sediment were visualized. No evidence of inflammatory or neoplastic changes were noted. The ureters were not visible and considered normal. The left kidney was uniform and measured 3.32 cm with minor, medullary rim sign. The right kidney was displaced caudally in this patient with dystrophic changes and minor pyelectasia. It was in ectopic position. This is an infrequent anomaly in cats. The area of the right kidney was free of evident pathology.