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102.

A 82-year-old man was brought to the ER by his son because of the swollen and painful left leg. The patient was diagnosed with pulmonary cancer 2 months ago. Which is the most probable cause of the swelling and the pain in the leg?

A. deep vein thrombosis
B. peripheral arterial disease
C. gout
D. Congestive heart failure
E. Hypoalbuminemia

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