Internal Jugular Vein Thrombosis as the Initial Presentation of Antiphospholipid Antibody-positive Vascular Behçet Disease: A Clinical Image.

Internal jugular vein (IJV) thrombosis is a rare and potentially life-threatening condition commonly caused by central venous catheter insertion, malignant tumors, and neck infections. A 45-year-old woman with an unremarkable medical history presented with left neck pain. Imaging studies of a suspected mediastinal tumor revealed IJV thrombosis.