22.
A physical therapist is evaluating a 50 year old patient with a generally swollen right leg. The patient does not report any trauma to the leg and describes the swelling as increasing gradually over the last 12 months. The swelling is non-pitting, primarily below the knee. The leg is not red or hot, and the patient indicates that his leg just feels “heavy.” What is the MOST likely origin of the swelling?
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