A 34-year-old man is evaluated for chest pain.

Fig. 106.1 (A–C) Axial CT images show a lobulated, low-attenuation mass, inferior to the body and tail of the pancreas without enhancement.

Retroperitoneal lymphangioma

• Enteric duplication cyst
  
• Enteric cyst
  
• Mesothelial cyst
  
• Pancreatic pseudocyst
  
• Cystic leiomyoma or leiomyosarcoma