A calcified lymph node is like a scar. It is a sign of an infection that took place a long time ago. You should not need any further testing or any treatment. However you should be aware that a calcified lymph node could physically erode into an airway. This is rare and harmless. The way that you would know this had happened is that you would cough up some mucus containing the calcium.
my brother was just diagnosed with a calcified lymph node. they thought he had kidney stones. went in to do surgery and no stones. they took him in for Cat Scan. and that's when they found this. he has another nuc (?) cat scan scheduled for July 26. will go from there. the doc told him if it was indeed calcified, chances of it being cancerous are slim. i can post more info as we go along if you are interested. it does sound tho like further testing is recommended. what is the latest happening in your case? thanks for sharing.