caa a22 4500 605493545 CHVBK 20210128100521.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s00261-015-0439-3 doi (NATIONALLICENCE)springer-10.1007/s00261-015-0439-3 Differentiation of small arterial enhancing hepatocellular carcinoma from non-tumorous arterioportal shunt with an emphasis on the precontrast CT scan [Elektronische Daten] [Bo Chung, Hyun Park, Sung Park, Jong Lee, Hye Ahn, Yang Kim] Purpose: To evaluate the value of precontrast phase (PP) of quadriphasic CT for differentiation of small arterial enhancing hepatocellular carcinoma (HCC) from non-tumorous arterioportal (AP) shunt in patients with chronic liver disease. Methods: Forty-eight patients with 28 HCCs and 28 AP shunts were enrolled. All lesions (5-20mm) showed arterial hyperenhancement with isoattenuation on portal venous phase or delayed phase without typical features of AP shunt. We evaluated and analyzed the attenuation of the lesions with qualitative and quantitative methods in each phase. The size, location, shape, margin, and coexistent HCC were evaluated. Diagnostic performances were also compared with triphasic CT and quadriphasic CT including PP in prediction of AP shunts from HCCs. Results: The round or oval shape and visually low attenuation on PP were independent predictors for differentiating HCCs from AP shunts in multivariate analysis. Our study also revealed significantly increased diagnostic performances for both observers when PP was added to the triphasic CT. Conclusions: PP can be helpful in differentiation of small arterial enhancing HCCs from AP shunts. Careful evaluation of PP may lower need for follow-up CT or MRI, and can possibly achieve earlier diagnosis of small HCCs. Springer Science+Business Media New York, 2015 Hepatocellular carcinoma nationallicence Arterioportal shunt nationallicence Chronic liver disease nationallicence Precontrast phase nationallicence Chung Bo Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea aut Park Hyun Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea aut Park Sung Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea aut Lee Jong Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea aut Ahn Hye Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea aut Kim Yang Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea aut Abdominal Imaging Springer US; http://www.springer-ny.com 40/7(2015-10-01), 2200-2209 0942-8925 40:7<2200 2015 40 261 https://doi.org/10.1007/s00261-015-0439-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00261-015-0439-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chung Bo Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea aut NATIONALLICENCE 700 1- Park Hyun Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea aut NATIONALLICENCE 700 1- Park Sung Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea aut NATIONALLICENCE 700 1- Lee Jong Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea aut NATIONALLICENCE 700 1- Ahn Hye Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea aut NATIONALLICENCE 700 1- Kim Yang Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea aut NATIONALLICENCE 773 0- Abdominal Imaging Springer US; http://www.springer-ny.com 40/7(2015-10-01), 2200-2209 0942-8925 40:7<2200 2015 40 261