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Updated: Feb 7, 2026

Microscopic Cyst Resection for the Treatment of Patients Diagnosed with Epididymal Cyst
Published on: March 31, 2023
Azygos vein varix mimicking bronchial cysts
Hiroyuki Miura1, Jun Miura2, Hiroshi Hirano3
1Department of Thoracic Surgery Akiru Municipal Medical Center Akiruno Tokyo Japan.
Abstract:
Azygos vein varix is a very rare disease associated with a risk of rupture or thrombosis. Here, we report a case of azygos vein varix mimicking bronchogenic cysts. A 79-year-old female patient presented with abnormal shadows on a chest X-ray during an annual check-up. A plain chest computed tomography (CT) showed a well-defined tumour, approximately 66 X 65 X 45 mm in size, behind the trachea. An enhanced CT scan was refused due to asthma complications. A high signal on T2W1 images from magnetic resonance imaging (MRI) indicated a cystic tumour. Diagnosed as a bronchogenic cyst, a cyst excision was scheduled. Upon observation with a thoracoscope, a dark purple-red saccular tumour was observed continuing on to the azygos vein and was removed using linear staplers. The patient is alive and well 4 years after the operation. If a cystic tumour located in the right upper mediastinum is observed, the presence of azygos vein varix should be considered.
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