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KMID : 0880420130140040607
Korean Journal of Radiology
2013 Volume.14 No. 4 p.607 ~ p.615
Multidetector CT Findings of Bowel Transection in Blunt Abdominal Trauma
Cho Hyun-Suk

Woo Ji-Young
Hong Hye-Suk
Park Mee-Hyun
Ha Hong-Il
Yang Ik
Lee Yul
Jung Ah-Young
Hwang Ji-Young
Abstract
Objective: Though a number of CT findings of bowel and mesenteric injuries in blunt abdominal trauma are described in literature, no studies on the specific CT signs of a transected bowel have been published. In the present study we describe the incidence and new CT signs of bowel transection in blunt abdominal trauma.

Materials and Methods: We investigated the incidence of bowel transection in 513 patients admitted for blunt abdominal trauma who underwent multidetector CT (MDCT). The MDCT findings of 8 patients with a surgically proven complete bowel transection were assessed retrospectively. We report novel CT signs that are unique for transection, such as complete cutoff sign (transection of bowel loop), Janus sign (abnormal dual bowel wall enhancement, both increased and decreased), and fecal spillage.

Results: The incidence of bowel transection in blunt abdominal trauma was 1.56%. In eight cases of bowel transection, percentage of CT signs unique for bowel transection were as follows: complete cutoff in 8 (100%), Janus sign in 6 (100%, excluding duodenal injury), and fecal spillage in 2 (25%). The combination of complete cutoff and Janus sign were highly specific findings in patients with bowel transection.

Conclusion: Complete cut off and Janus sign are the unique CT findings to help detect bowel transection in blunt abdominal trauma and recognition of these findings enables an accurate and prompt diagnosis for emergency laparotomy leading to reduced mortality and morbidity.
KEYWORD
MDCT, Blunt abdominal trauma, Bowel transection
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