The right kidney is markedly enlarged, with a rounded shape. It is distorting the abdominal wall on the v/d projections and displacing the ascending and transverse colon medially and ventrally.The left kidney also has an abnormal shape, with reduced length and increased width. There is also spondylosis deformans at the L5-6 intervertebral disc space, which is an incidental finding.Click here to see normal feline abdominal radiographs.Click this link to see the ultrasound image from the cat above. This was a perinephric pseudocyst, which is often associated with chronic renal disease, but is often asymptomatic in itself.Refs: Cote, Clinical Veterinary Advisor-Dogs and Cats, 4th ed. Perinephric Pseudocyst, online. Radiographic interpretation and images courtesy, Dr A. Zwingenberger and Veterinary Radiology. Normal radiograph links courtesy, Imaging Anatomy Univ. of Illinois Vet Med.