A 28-year-old male motorcyclist is brought to the trauma bay 45 minutes after a high-speed collision. On examination, he has right chest wall tenderness, rib fractures (5–8), and shallow rapid breathing (RR 32, SpO₂ 88% on room air). CT chest reveals right lower zone opacification. The structure marked **A** in the diagram—non-segmental patchy consolidation with ground-glass opacities—is a hallmark finding of pulmonary contusion. Which of the following best distinguishes this radiological pattern from lobar pneumonia in the acute trauma setting?
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