A CXR of a person with lung cancer, which was causing<unk>  A CT image showing compression of the right hilar structures by cancer The main techniques of diagnosing<unk>  are with chest X-rays (CXR), CT scans, transbronchial needle aspiration at bronchoscopy and mediastinoscopy. CXRs often provide the ability to show mediastinal widening and may show the presenting primary cause of<unk> . However, 16% of people with<unk>  have a normal chest X-ray. CT scans should be contrast enhanced and be taken on the neck, chest, lower abdomen, and pelvis. They may also show the underlying cause and the extent to which the disease has progressed.
Superior vena cava syndrome
Inferior vena cava syndrome
Mediastinitis
Aortocaval compression syndrome
Subclavian steal syndrome
Pulmonary hematoma
COACH syndrome
Pulmonary hemorrhage