A 55-Year-Old Man Is Brought to the Emergency Department Due

A 55-year-old man is brought to the emergency department due to shortness of breath, productive cough, and confusion.  His wife mentions that last week he was diagnosed with the flu and his symptoms have progressively worsened.  Temperature is 39.4 C (103 F) , blood pressure is 80/50 mm Hg, pulse is 120/min, and respiratory rate is 22/min.  Pulse oximetry shows 86% on room air.  On physical examination, the patient is obtunded and in respiratory distress.  He is intubated, given a 2-L bolus of normal saline, and started on broad spectrum antibiotics after blood cultures are obtained.  A central line is placed to access a structure embryonically derived from the common cardinal veins.  This structure is represented by which of the following labels shown in the chest CT scan below?

A) A
B) B
C) C
D) D
E) E

Correct Answer:

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