Internal jugular vein aneurysm in an adult: diagnosis on non-invasive imaging

We report the case of a 48-year-old man with a right fusiform internal jugular venous aneurysm, presenting as a unilateral painless neck swelling on coughing or laughing. This is a rare condition, more commonly seen in the paediatric population and can be diagnosed using non-invasive modalities such as Doppler ultrasound and contrast-enhanced CT. This anomaly is frequently misdiagnosed or overlooked, and our case highlights the importance of considering venous aneurysm as a differential to prevent invasive imaging and inappropriate management.

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