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Aneurysm of the anterior jugular vein.

Aneurysms of the anterior jugular vein are rare. This case report describes such an abnormality. In this instance, microscopic study showed abnormal distribution of elastic and muscular fibers along the wall of the vessel. These findings and corroboration of these findings in other similar cases suggest a congenital etiology for the abnormality. The existence of venous aneurysms as a true pathologic feature is confirmed.