A 24-year-old male presents to the ED after a GSW to the left flank with an entrance wound noted posteriorly and an exit 
wound noted anteriorly. His vitals are stable and his examination is only remarkable for left flank and side tenderness. His abdominal exam is benign. Your trauma surgeon wants you to perform a FAST exam to see if there is any intra-abdominal involvement. You perform the FAST exam...
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