Is it possible to differentiate between hydatid and simple cysts in the liver by means of diffusion-weighted magnetic resonance imaging?

Abstract

OBJECTIVE Our aim was to evaluate the contribution of diffusion-weighted imaging to the differentiation of hydatid cysts (HCs) from the simple cysts and to the identification of the HC subtypes. MATERIALS AND METHODS A total of 37 patients were included in this retrospective study. Fifty of these patients had diagnosed liver cysts (28 HCs and 22 simple cysts) of at least 1 cm in size. All of the cysts were examined with sonography and magnetic resonance imaging, and the HCs were classified according to the World Health Organization criteria. RESULTS Twenty-eight of the total 50 cysts were HCs, and 22 were simple cysts. When the apparent diffusion coefficient (ADC) values of all HCs were compared with the ADC values of the simple cysts, a statistically significant relationship was found (P=.001). The optimal ADC threshold value was established as 2.5 s/mm(2). The sensitivity, specificity, positive predictive value, negative predictive value and accuracy rates were 60%, 95%, 94%, 65% and 76%, respectively. CONCLUSION Diffusion-weighted imaging-magnetic resonance imaging is a considerably helpful technique for differentiating between HCs and simple cysts and for differentiating between HC subtypes.

DOI: 10.1016/j.clinimag.2011.03.005

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@article{Sonmez2012IsIP, title={Is it possible to differentiate between hydatid and simple cysts in the liver by means of diffusion-weighted magnetic resonance imaging?}, author={Guner Sonmez and Ali Kemal Sivrioğlu and Hakan Mutlu and Ersin Ozturk and Mehmet Incedayi and B{\"{u}lent Karaman and C. Cinar Basekim}, journal={Clinical imaging}, year={2012}, volume={36 1}, pages={41-5} }