<prompt> All of the following are features of SVC Syndrome except-Facial swellingDilatation and congestion of neck veinsHeadacheHoarseness of voice  <response>: Ans. is d i.e., Hoarseness of voice SVC Syndromeo Superior vena cava syndrome SVCS, is a group of symptoms caused by obstruction of the superior vena cava a short, wide vessel carrying circulating blood into the heart. More than 90 of cases of superior vena cava obstruction are caused by cancer - most commonly bronchogenic carcinomaSigns and symptomso Shortness of breath is the most common symptom, followed by face or arm swellingo Following are frequent symptoms: Difficulty breathing Headache Facial swelling Venous distention in the neck and distended veins in the upper chest and arms Upper limb edema Lightheadedness Cough Edema swelling of the neck, called the collar of Stokes Pembertons sign 