Helical CT in the diagnosis of primary retroperitoneal neoplasm
LI Kang1, MA Qian-hong1, LV Fu-rong2, YANG Qing-jun1, LV Fa-jin2
1. Chongqing Zhongshan Hospital, Chongqing 400013, China;2. Department of Radiology, the First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China