Fig. 4From: Thoracoscopic esophagectomy in the prone position for esophageal cancer patients with pectus excavatum: a report of two casesPatient 2. a–d Contrast-enhanced CT in the supine position showing the pectus excavatum. The Haller index score was 4.3. e–h CT image in the prone position revealed dilated mediastinum (arrow) compared to a–d. CT slice level was matched based on the sternal boneBack to article page