Venous obstruction of thyroid malignancy origin: the Antoine Lacassagne Institute experience.

Background And Aims: To show the benefits of Ultrasonography in the diagnosis of great vein involvement in the neck and mediastinum in thyroid malignancies (primary or secondary) in our experience and to report patient outcomes.

Methods: Clinical data were collected from the thyroid unit database of the Antoine Lacassagne Institute.

Results: Of 1171 patients with thyroid cancer treated at our institution over the last 18 years, we retrospectively identified nine patients (0.