摘要
An l l-years-old boy presented with 7 days history of abdominal pain, precordial pain and intermittenthematemesis. The physical examination revealed appearance of anemia, precordial tenderness without other positive findings. Routine blood test was notable for Hb 60 g/L. Contrast CT scan of the chest revealed a soft tissue dense mass close to the descending aorta （Figure 1 A and B）. The mass and the adjacent artery were luminally connected and intensified substantially at the same time and to the same degree on the radiographic studies. The wall of the mass was slightly thickened and the inner surface of the wall was not smooth. The esophagus was deviated and became narrow due to compression （Figure 1 A）. Axial maximum intensity projection （MIP） showed a linear metallic foreign body （Figure I C） and local airway moved forward and became flat. Volume rendering （VR） confirmed a right- side protruding mass adjacent to the beginning of the descending aorta （Figure 1 D）. The gastroscopy showed ulceration of the esophageal mucosa （Figure 1 E）.
An l l-years-old boy presented with 7 days history of abdominal pain, precordial pain and intermittenthematemesis. The physical examination revealed appearance of anemia, precordial tenderness without other positive findings. Routine blood test was notable for Hb 60 g/L. Contrast CT scan of the chest revealed a soft tissue dense mass close to the descending aorta （Figure 1 A and B）. The mass and the adjacent artery were luminally connected and intensified substantially at the same time and to the same degree on the radiographic studies. The wall of the mass was slightly thickened and the inner surface of the wall was not smooth. The esophagus was deviated and became narrow due to compression （Figure 1 A）. Axial maximum intensity projection （MIP） showed a linear metallic foreign body （Figure I C） and local airway moved forward and became flat. Volume rendering （VR） confirmed a right- side protruding mass adjacent to the beginning of the descending aorta （Figure 1 D）. The gastroscopy showed ulceration of the esophageal mucosa （Figure 1 E）.
