Tabriz University of Medical Sciences Medical Journal of Tabriz University of Medical Sciences 2783-2031 33 4 2011 10 25 Superior Vena Cava Syndrome Caused by Mediastinal Calcified Lymphadenitis 92 94 EN Mohammad Kazem Tarzamni Mehrnoosh Toofan Batool Seifi Journal Article 2011 10 26 Superior vena cava (SVC) syndrome is caused by compressive effects of intrathoracic lesions on SVC and subsequent occlusion in venous drainage of head, neck, arms and upper part of chest. SVC syndrome causes different signs depending on the intensity of involvement. Here, we report a 54-year-old man with SVC syndrome due to calcified lymphadenitis, which is one of the rare causes of this syndrome.