Fig. 2From: Incidence of upper extremity deep vein thrombosis in the retrosternal reconstruction after esophagectomyThe width of retrosternal space was defined by the ratio of a to b. a the back of the sternum to the ventral part of the brachiocephalic artery. b the back of the sternum to the ventral part of the vertebra. To evaluate the retrosternal space, Contrast-enhanced CT was conducted preoperatively within 3Â monthsBack to article page