2 1/2 yr old boy with enlarged blood vessels in routine chest xray

Our dear 2 1/2 yr old son had a routine chest xray to check for pneumonia as he had it in september last yr. The radiologist compared the two xrays and noticed his blood vessels were enlarged. We are worried sick. He has an echo on feb 13. It could be nothing but we are worried because both xrays show it. Can they be wrong? I heard pediatric xrays are difficult to read.

[CCFheartMD10]

Pediatric x-rays can indeed be difficult to interpret as children are constantly growing at rates which differ between individuals. Therefore what is normal for one child can be abnormal for another, to a much greater degree than in adults. In the meantime unfortunately I cannot be of much more help - it is best to wait for the echo to give a definitive answer.