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[Luxation of the clavicle as rare cause of monstrous thrombus formation of the internal jugular vein].

Summary.A 55-year-old female with massive painless swelling of the right cervical soft tissue was admitted for surgical exploration. The operation revealed an ectasia of the internal jugular vein with a diameter up to 7 cm which was obliterated by thrombotic material. We discussed a retrosternal dislocation of the clavicle proved by chest X-ray. We resected the internal jugular vein from the basis of the skull to the upper thoracic aperture. The postoperative course was uneventful.