Peter Weibl, Ivan Lutter, Ján Breza, Milan Obšitník, Marína Kráľovičová, Marek Brezovský, Roman Sokol
Objective: The aim of our study was to evaluate the possible variability of US (ultrasound) and CT (computerized tomography) findings of hyperechoic cystic lesions of the kidney defined on US examination. Materials and methods: 18 patients (pts) with the US finding of hyperechoic renal cystic lesion underwent CT examination. 17 pts were asymptomatic, without microscopic haematuria, 1 pt suffered from car accident with intermittent right flank pain. The mean patients age was 57.2 yrs. US/CT findings were retrospectively reviewed and compared by 2 certified radiologists and one urologist in consensus between January 2005/January 2006. Results: The size of the cystic lesions varied from 2 to 8 cm in diameter (mean diameter was 3.87 cm). The variety of CT findings were diagnosed as haemorrhagic renal cyst, Bosniak type II, IIF, III and IV cystic lesion, renal cell carcinoma in the cyst wall with gelatinous content and organized haematoma in the cystic wall during the evaluation of hyperechoic renal cysts defined on US. The highest accuracy of US and CT findings was confirmed in Bosniak II class (in all 7 pts). Conclusion: The authors conclude that there is a variability of US and CT findings of hyperechoic cystic lesions of the kidney defined on US, which has a modifying impact on the following therapeutic management.
Keywords: hyperechoic, hyperdense renal cyst, complex renal cyst, biopsy