Perirenal Pseudocyst in a Cat

This study described clinical and radiological evaluations and pathological findings as well as surgical treatment in a cat diagnosed with unilateral perirenal pseudocyst. In a 5‐year old cat, a palpable cyst in the right abdominal cavity was suspected upon clinical examination. Perirenal pseudocyst of radiological diagnosis to confirm the mass included radiography, ultrasonography (US), renal Doppler ultrasonography (DUS), and excretory urography (EU). Together with radiological findings, observations during laparatomy, and histopathological findings revealed that the mass was a unilateral perirenal pseudocyst. The cyst with its capsule was extirpated and removed performing right renal nephrectomy. In conclusion, we consider that determination of renal function is important in cases of sporadically encountered perirenal pseudocyst that the EU and Doppler US needing to be performed in that context support one another in determining the type of perirenal pseudocyst, renal function and renal damage.