Using CT to Diagnose Traumatic Lumbar Hernia
Karen L. Killeen1,
Stephanie Girard2,
Jonathan H. DeMeo3,
K. Shanmuganathan1 and
Stuart E. Mirvis1
1
Department of Radiology, Shock Trauma Center, University of Maryland Medical
System, 22 S. Greene St., Baltimore, MD 21201-1595.
2
Department of Radiology, Ottawa Hospital, Civic Campus, 1053 Carling Ave.,
Ottawa, Ontario K1Y 4E9, Canada.
3
Department of Radiology, Riverside Regional Medical Center, 500 J. Clyde
Morris Blvd., Newport News, VA 23601.

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Fig. 1. 50-year-old man who had been restrained driver in motor vehicle
collision. Axial CT scan shows herniation of ascending colon (curved
arrows) through traumatic defect in Petit's triangle.
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Fig. 2. 18-year-old man who had been restrained driver in motor vehicle
collision. Axial CT scan shows herniation of retroperitoneal fat
(arrow) through traumatic defect in Petit's triangle.
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Fig. 3. 17-year-old girl who was unrestrained passenger in motor vehicle
collision. Axial CT scan shows herniation of descending colon (curved
arrow) through large defect in Petit's triangle.
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Fig. 4. 26-year-old man who had been dragged under light-rail train. Axial
CT scan shows herniation of ascending colon (curved arrows) through
traumatic defect in Grynfeltt-Lesshaft triangle.
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