My 5 year old daughter has a paratrecheal mass in one lung. what could this be? we have been told it was hystoplasmosis, leukemia, or tuberculosis.

Paratracheal mass: I don't believe that any of those 3 diagnosis can explain that paratracheal mass based on the usual clinical presentation and radiographic presentation of those diseases. I think that she should have a proper ct scan chest with high resolution and see a cardiothoracic surgeon for consultation. Could it be some kind of anatomic anomaly or diverticulum is possible.