Grading System for Superior Vena Cava Syndrome • Grade 0 - Asymptomatic - Radiographic superior vena cava obstruction in the absence of symptoms • Grade 1 - Mild - Edema in head or neck (vascular distention), cyanosis, plethora • Grade 2 - Moderate - Edema in head or neck with functional impairment (mild dysphagia, cough, mild or moderate impairment of head, jaw or eyelid movements, visual disturbances caused by ocular edema) • Grade 3 - Severe - Mild or moderate cerebral edema (headache, dizziness) or mild/moderate laryngeal edema or diminished cardiac reserve (syncope after bending) • Grade 4 - Life-threatening - Significant cerebral edema (confusion, obtundation) or significant laryngeal edema (stridor) or significant hemodynamic compromise (syncope without precipitating factors, hypotension, renal insufficiency) • Grade 5 - Fatal - Death #Superior #VenaCava #Syndrome #SVC #diagnosis #grading #vascular
