Internal Jugular Vein Thrombosis due to Metastatic Cancer in Lymphnodes.

概要

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Thrombosis of the internal jugular vein can be a complication of head and neck infection or neoplasm, although it is more commonly related to intravenous drug use or placement of central venous catheters. It is a vascular disorder that tends to be overlooked or misdiagnosed. Four cases of internal jugular vein thrombosis due to cervical lymphnode metastasis from head and neck cancers are presented. Three of them had fever of unknown origin and swelling of the neck, and in one of these the CT scan showed a low density lumen in the left internal jugular vein surrounded by a sharply defined wall. Specimens taken during neck dissection showed an organized thrombus and tumor invasion of the vein wall. In two other patients, invasive tumor and resultant thrombi were identified during surgery. The fourth patient had no clinical symptoms, but oropharyngeal carcinoma with neck metastasis and thrombosis of the internal jugular vein were found incidentally on CT scan without any clinical symptoms.