PROMINENT VEINS IN ARMS AND CHEST ARE A VERY SERIOUS CONCERN.SHOULD BE CHECKED FOR BLOCKAGE OF VEINS DRAINING BLOOD FROM THESE AREAS OF BODY LIKE BLOOD CLOTS
OR SOME MASS PRESSING ON LARGE VEINS IN THE CHEST
You should consult your physician as you may be developing condition called Thrombophlebitis
which is an inflammation of your veins. It can be caused due to the pic line.