Ultrasonographic long-axis image of the left kidney of a 8.8-year-old, 41.9 kg, neutered male, mixed breed dog diagnosed with ICL treated with sclerotherapy (histopathology not available). A large anechoic cystic structure is identified within the caudal pole of the left kidney effacing the middle third of the renal parenchyma, has rounded turgid walls and lacks septations. Cranial is to the right of the image. Image courtesy of Dr. Grimes