My son was born almost 4 weeks early (@36 weeks and 3 days), by emergency C-section b/c there was lack of movement. He spend 5 days in the NICU b/c of hypoglymia; he could not maintain his blood sugar. This last weekend we had a trip to the ER b/c of a high fever (101.7); the dr's took a chest X-ray, blood work, etc. The following morning the doctor got a better look in his ear and said that it was infected. They put him on antibiotics and is doing much better now. His chest x-ray came back abnormal b/c of what they think is an enlarged thymus. They did a repeat chest x-ray the following day and the results were the same. They wanted to dig further to make sure it was an enlarged thymus and not a mediastinal mass of somesort. He had a CT scan done and the radiologist still thinks that it is an enlarged thymus. My question is what could be the cause of this, is this something that I should be worried about and should I have a follow up CT scan or X-ray later down the road. My son is thriving, he has doubled his birth weight and seems to be doing well; but in the back of my mind I am still concerned. Is this normal to have a 12 week old baby, who was born @ 6.1lbs and now is 12.2lbs, to have an enlarged thymus? He has never been on any steriods either.
Any suggestions and answers would be greatly appreciated.