Internal jugular vein phlebectasia and duplication: CT features
Related Experiment Video
Updated: Aug 17, 2026

Point-Of-Care Ultrasound Screening for Proximal Lower Extremity Deep Venous Thrombosis
Published on: February 10, 2023
Abstract:
Phlebectasia of the internal jugular vein (IJV) is a rare entity with only 25 cases having been reported. Clinically this condition presents with enlargement with a Valsalva maneuver and decrease at rest. Venography, anteriography, and ultrasound have previously been used to diagnose this unusual cause of neck mass. We present a case in which CT confirmed the clinical diagnosis and in which there was an incomplete ipsilateral duplication of the IJV. This is only the second case reported of IJV phlebectasia and duplication.
Related Concept Videos
Veins
Structure of Veins:
The structure of veins is specifically designed to assist in the low-pressure transportation of blood...
Veins of Head and Neck
On the other hand, the vertebral veins, unlike their arterial counterparts, are not primarily responsible for brain drainage. Instead, they drain the cervical vertebrae, spinal cord, and some small...
Development of the Lymphatic System
The first lymph sacs to form are the paired jugular lymph sacs located at the junction of the internal jugular and subclavian veins. From these sacs, lymphatic capillary plexuses extend to the thorax, upper limbs, neck, and head, eventually forming lymphatic vessels. Each jugular lymph sac maintains a...
Venous Thrombosis I: Introduction
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies
Venous Thrombosis III: Interprofessional Care

