CEUS utility in the diagnosis of a stage I renal cancer developed on polycystic kidney. A case report.

We present the case of a 49-year-old patient with polycystic kidney disease in which, in the pre-transplant CT-scan evaluation, a Bosniak III cyst was found in the left kidney. After contrast enhanced ultrasound (CEUS) examination the cyst wasinterpreted as a Bosniak IV malignant cyst and surgical resection of the kidney was realised. The pathology report showed papillary renal cell carcinoma. This case report emphasizes the role of CEUS in polycystic kidney disease examination.