Have Medical Questions? Ask a Doctor Online!
This is Dr. David
more imaging needs to be done
a CT scan of the shoulder or MRI scan of the should needs to be done to check for trapped nerves in the shoulder which can keep arm from raising.
a chest CT scan needs to be done to check for superior vena cava syndrome from enlarged lymph nodes in the mediastinum.
chest xrays are not enough to look at the mediastinum. a CT has much more detail.
let me know if you have questions.