INTERNAL JUGULAR-VEIN THROMBOSIS IN HEAD AND NECK-CANCER PATIENTS AS A CHANCE FINDING ON SONOGRAPHY

At present thrombosis of the internal jugular vein is an uncommon even t that is now more frequently associated with diagnostic or therapeuti c catheterization. If an apparent spontaneous thrombosis occurs, malig nancy should be considered in the differential diagnosis. Two cases of clinically asymptomatic thrombosis of the internal jugular vein are p resented. A 69-year-old female patient with metastasizing renal cell c arcinoma had bilateral thrombosis and a 73-year-old male with a small laryngeal carcinoma had a unilateral thrombosis. Increased blood coagu lability as part of a paraneoplastic syndrome was considered to be the possible etiology. The role of sonography in the diagnosis is emphasi zed.