No abstract available. Article truncated after first page. Clinical History: A 71-year-old Caucasian man presented for venous thromboembolism prophylaxis for a scheduled total right knee arthroplasty. His prior medical history was remarkable for anemia requiring transfusion of 4 units of blood 3 years prior to presentation, hypertension, prostatic hypertrophy, seasonal allergies, and glucose intolerance. Frontal and lateral chest radiography (Figure 1) was performed. Which of the following statements regarding the chest radiograph is most accurate? 1. The chest radiograph shows a circumscribed left lung mass; 2. The chest radiograph shows a mediastinal mass; 3. The chest radiograph shows bilateral symmetric linear and reticular opacities; 4. The chest radiograph shows multifocal, bilateral consolidation; 5. The chest radiograph shows numerous small nodules ...