Scar: For lack of a better word. Depending on where the catheter was will help explain some symptoms. If at the elbow, the contrast and blood forms a pocket. If there is a nerve nearby, there may be some pressure on it . Depends on how much was injected as well. Small amount should resorb quickly while larger amounts a little longer. You should talk to your doctor about possible relief.
Answered 12/27/2017
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