CASE 85
History: A 32-year-old man with an abnormality noted on a routine chest x-ray.
1. Which of the following should be included in the differential diagnosis of the imaging finding shown in Figure A? (Choose all that apply.)
A. Azygous continuation of the inferior vena cava (IVC)
D. Obstruction of the superior vena cava
2. What is the physical cause of azygous continuation?
C. Lateral course of the azygous vein in a pleural septum
D. Occlusion, or failure of development of the IVC
3. Which of the following statements regarding azygous continuation is true?