Had a left arm ct scan contrast extravasation omnipaque contrast material. left arm was immediately swollen above elbow to almost shoulder. day later swelling went down, but have some pain in arm. is this natural? when will normal feeling come?

EXTRAVASATION OF DYE IS ALWAYS PAINFUL. THE GOOD THING IS SWELLING COMING DOWN. USUALLY STEROIDS ORALLY HELP - PAIN SHOULD REDUSE OVER THE NEXT 3-7 DAYS. IF IT WORSENS MAKE SURE YOU SEE SOMEONE.

Due to the extravasation of contrast material (going outside of vein and into soft tissue of arm) swelling of arm can and does often occur. This may be due to contrast material itself and/or pressure on vein which prevents normal venous return causing edema in arm. The good thing is that it's been getting better, and it should. It's often recommended to apply cold compresses and elevate arm.