Ces radiol. 2017, 71(3):207-215 | DOI: 10.55095/CesRadiol2017/029

Accuracy of computed tomography in the diagnosis of focal renal lesionsOriginal article

Iva Mácová¹, Filip Čtvrtlík¹, Zbyněk Tüdos¹, Miroslav Heřman¹, Milan Král²

¹ Radiologická klinika LF UP a FN, Olomouc

² Urologická klinika LF UP a FN, Olomouc

Purpose: The aim of this study was to compare computed tomography (CT) findings of focal renal parenchymal masses with definite histological diagnosis in operated patients and to measure the accuracy of CT in the assessing the malignancy of the lesions.

Methods: This retrospective study included 630 patients who underwent surgery for solid renal masses detected on imaging throughout the years 2009-2013 with the following inclusion criteria: adult patient operated with renal parenchyma mass and available preoperative contrast-enhanced CT. Exclusion criteria were: cancer recurrence or metastasis. We compared the CT results with definitive histological diagnosis and calculated the positive predictive value of CT to correctly define malignant lesions and lesions that should be operated on. Calculations of the positive predictive value were also performed according to the size of the lesions.

Results: We found a positive predictive value of 91.7% for CT imaging to predict malignancy and a value of 97.3% in identifying lesions which should be operated on (this group included the oncocytomas as well as carcinomas). Accuracy was lower in lesions smaller than 2 cm.

Conclusion: Contrast-enhanced CT is a reliable method for assessment of renal parenchymal lesions.

Keywords: renal masses, renal cell carcinoma, CT, accuracy

Grants and funding:

Práce byla podpořena grantem UP: IGA_LF_2017_001 a RVO: LF UP 61989592.

Accepted: September 15, 2017; Published: September 1, 2017  Show citation