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CT in Blunt Liver Trauma¹

¹ From the Departments of Radiology (W.Y., Y.Y.J., J.K.K., J.J.S., H.S.L., S.S.S., J.G.P., H.K.K.), Surgery (J.C.K.), and Anesthesiology (S.W.J.), Chonnam National University Hospital, Chonnam National University Medical School, 8 Hak-dong, Dong-Ku, Gwangju 501–757, South Korea. Recipient of a Certificate of Merit award for an education exhibit at the 2003 RSNA Scientific Assembly. Received April 19, 2004; revision requested May 17 and received June 4; accepted June 7. All authors have no financial relationships to disclose. Address correspondence to W.Y. (e-mail: radyoon@chonnam.ac.kr).

Nonsurgical treatment has become the standard of care in hemodynamically stable patients with blunt liver trauma. The use of helical computed tomography (CT) in the diagnosis and management of blunt liver trauma is mainly responsible for the notable shift during the past decade from routine surgical to nonsurgical management of blunt liver injuries. CT is the diagnostic modality of choice for the evaluation of blunt liver trauma in hemodynamically stable patients and can accurately help identify hepatic parenchymal injuries, help quantify the degree of hemoperitoneum, and reveal associated injuries in other abdominal organs, retroperitoneal structures, and the gastrointestinal tract. The CT features of blunt liver trauma include lacerations, subcapsular or parenchymal hematomas, active hemorrhage, juxtahepatic venous injuries, periportal low attenuation, and a flat inferior vena cava. It is important that radiologists be familiar with the liver injury grading system based on these CT features that was established by the American Association for the Surgery of Trauma. CT is also useful in the assessment of delayed complications in blunt liver trauma, including delayed hemorrhage, hepatic or perihepatic abscess, posttraumatic pseudoaneurysm and hemobilia, and biliary complications such as biloma and bile peritonitis. Follow-up CT is needed in patients with high-grade liver injuries to identify potential complications that require early intervention.

© RSNA, 2005

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