Robotic Resection of a Left Brachiocephalic Vein Aneurysm Mimicking Thymoma.

A 70-year-old man was scheduled for the robotic resection of a 21×16 × 30 mm thymic nodule incidentally detected by a computed tomography scan (CT) for thoracic trauma after a domestic accident. Positron emission tomography (PET) scan confirmed a low [18F]-FDG uptake (SUVmax = 1,9). During the surgery, the mass showed to be a saccular aneurysm of the left brachiocephalic vein (LBCV). A complete tangential resection of the aneurysm, with the use of EndoGIA stapler (Covidien® Endo GIA™) at its origin, was performed. The patient's recovery was uneventful, and postoperative CT with contrast administration confirmed the patency of the vein.