hi! i got a a small lump on my wrist where my pulse is, same line with my vain i noticed this right after my iv test for ct scan. until now my veins in my left arm where my lump is, is still seems angry compare to my veins on my right hand. is this related to to the iv given to me for my ct scan?

Summarized question: What causes lump on wrist after having Intravenous injection?