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Figure 1


Fig. 1A —Screening CT colonography in asymptomatic 54-year-old man. Supine transverse (A) and coronal (B) 2D images with polyp window settings (width, 2,000 H; level, 0 H) show thin curvilinear pneumatosis involving ascending colon and ileocecal valve (arrow, B). Less than half of short-axis circumference was involved in this case. Patient remained asymptomatic immediately after procedure and has developed no new symptoms in 13 months since study.