Abstract
Introduction: Huge dilatacion of the azygos vein (Aneurysms of the azygos vein) are rare and can sometimes mimic a paratracheal or posterior mediastinal mass. Objective: It is important to confirm the diagnosis with radiologic tools before performing invasive procedures, which carry the risk of hemorrhage. Discussion: The usual diagnosis of a mediastinal mass by mediastinoscopy or percutaneous fine-needle aspiration or biopsy is very hazardous if there is a venous varix. Noninvasive thoracic contrast CT scanning is a safe and better choice for diagnosis.
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