Figure 1a. Transverse images in a 36-year-old man involved in a motor vehicle accident. (a) Screening US image of the pelvis shows free fluid (arrows) posterior to the bladder (B). (b) US image of the left upper quadrant shows heterogeneity (*) of the spleen. Arrows indicate the splenic margin. (c) Contrast material-enhanced abdominal CT image confirms splenic injury (arrows) and reveals perisplenic fluid (*). This image was obtained 3 days after screening US was performed. An earlier CT image (not shown) revealed similar findings, with a smaller amount of perisplenic fluid.