Contribution of diffusion weighted MRI to the differential diagnosis of renal masses

Naciye Kış
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Hanife Gülden Düzkalır
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Mehmet Oğuzhan Ağaçlı
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Berrin Erok
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Zeynep Gamze Kılıçoğlu
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Department of Radiology, University of Medical Sciences, Prof Dr Cemil Tascıoglu City Hospital, İstanbul, Turkey
Kartal Dr. Lutfi Kirdar City Hospital, Department of Radiology, Istanbul, Turkey
Department of Radiology, University of Medical Sciences, Umraniye Education and Research Hospital, İstanbul, Turkey
Department of Radiology, University of Medical Sciences, Prof Dr Cemil Tascıoglu City Hospital, İstanbul, Turkey
Department of Radiology, University of Medical Sciences, Haydarpaşa Education and Research Hospital, İstanbul, Turkey
Received: 15 September 2021 / Revised: 15 November 2021 / Accepted: 22 November 2021 / Published: 30 March 2022

Abstract

Introduction and aim. We aimed to assess the usefulness of diffusion weighted imaging (DWI) and apparent diffusion coefficients (ADCs) for characterizing renal masses.

Material and methods. In this retrospective study we measured the ADC values of renal masses at b=0, b=500 and b=1000. Measurements were made by placing a circular region of interest with a diameter of 1 cm. ADC values from normal renal parenchyma were taken to define the ADC and to compare with the ADC values of the lesions.

Results. A total of 72 lesions of 54 patients were included.40 of the masses were benign and 32 were malignant. The ADC values of benign lesions at both b values were significantly higher than malignant lesions. We found the lowest values in angiomyolipomas (AMLs) and oncocytomas and the highest values in Bosniac type I cysts. Similarities was found between the ADC values of some AMLs and the RCCs. In terms of statistical results, the inclusion of AMLs in the analysis did not significantly affect the difference between malignant and benign lesions.

Conclusion. In our study, the ADC values of benign renal masses were higher than those of normal renal parenchyme, which is higher than those of malignant renal masses.The lowest ADC values were observed in AMLs and oncocytomas.

 

Cite

Kış N, Düzkalır HG, Ağaçlı MO, Erok B, Kılıçoğlu ZG. Contribution of diffusion weighted MRI to the differential diagnosis of renal masses. Eur J Clin Exp Med. 2022;20(1):44–48. doi: 10.15584/ejcem.2022.1.6

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