54-year-old dialysis patient presents with left arm pain and swelling. His dialysis nurse sends him in 
because she is afraid to dialyze him from his AV graft in the left arm. The patient states that swelling has been present in the arm for a while but it has gotten worse recently and he is waiting to follow back up with his vascular surgeon. You perform a focused study of the left arm and note the following...
Take the Challenge