text: Other diagnostic<unk>  in the evaluation of<unk>  vena<unk>  syndrome include sputum tests, bronchoscopy, and biopsy. In addition, invasive contrast venography is also a diagnostic tool in the diagnosis of<unk>  vena<unk>  syndrome. It may be useful on the etiology of obstruction and exact location of the obstruction, also helpful in the surgical management of the obstructed vena<unk> .
option_0: Superior vena cava syndrome other diagnostic studies
option_1: Superior vena cava syndrome other imaging findings
option_2: Superior vena cava syndrome differential diagnosis
option_3: Superior vena cava syndrome pediatric considerations
option_4: Superior vena cava syndrome causes
option_5: Cardiomegaly differential diagnosis
option_6: Tracheitis other imaging findings
option_7: Hemoptysis other diagnostic studies