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J Chest Surg

Published online December 15, 2022

Copyright © Journal of Chest Surgery.

Migratory Azygos Lobe: A Case Report

Min Suk Choi, M.D. , Eung-Joong Kim, M.D., Ph.D.

Department of Thoracic and Cardiovascular Surgery, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Goyang, Korea

Correspondence to:Eung-Joong Kim
Tel 82-31-961-7280
Fax 82-31-961-7287
E-mail kimej580228@gmail.com
ORCID
https://orcid.org/0000-0002-1085-0098

Received: August 23, 2022; Revised: September 30, 2022; Accepted: October 16, 2022

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The azygos vein sometimes merges abnormally across the right upper lobe of the lung and it hangs at the lower edge of a membranous septum, called the meso-azygos. The septum invaginates the lobe and makes a fissure. The smaller medial part of the right upper lobe is called an azygos lobe. A 16-year-old male patient was diagnosed with right-sided pneumothorax, and a closed thoracostomy was done in the emergency room. During elective wedge resection including the bulla, the meso-azygos, abnormal azygos vein, and azygos lobe were detected. We reviewed the computed tomography images and found that the azygos lobe had re-expanded laterally, not medially, to the meso-azygos after the closed thoracostomy in the emergency room. The patient had been diagnosed with left-sided pneumothorax a year ago, and no one noticed the azygos lobe at that time. We report the intraoperative findings and comparative images of a migratory azygos lobe.

Keywords: Azygos lobe, Computed tomography, Video-assisted thoracic surgery, Spontaneous pneumothorax, Case report

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J Chest Surg

Published online December 15, 2022

Copyright © Journal of Chest Surgery.

Migratory Azygos Lobe: A Case Report

Min Suk Choi, M.D. , Eung-Joong Kim, M.D., Ph.D.

Department of Thoracic and Cardiovascular Surgery, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Goyang, Korea

Correspondence to:Eung-Joong Kim
Tel 82-31-961-7280
Fax 82-31-961-7287
E-mail kimej580228@gmail.com
ORCID
https://orcid.org/0000-0002-1085-0098

Received: August 23, 2022; Revised: September 30, 2022; Accepted: October 16, 2022

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The azygos vein sometimes merges abnormally across the right upper lobe of the lung and it hangs at the lower edge of a membranous septum, called the meso-azygos. The septum invaginates the lobe and makes a fissure. The smaller medial part of the right upper lobe is called an azygos lobe. A 16-year-old male patient was diagnosed with right-sided pneumothorax, and a closed thoracostomy was done in the emergency room. During elective wedge resection including the bulla, the meso-azygos, abnormal azygos vein, and azygos lobe were detected. We reviewed the computed tomography images and found that the azygos lobe had re-expanded laterally, not medially, to the meso-azygos after the closed thoracostomy in the emergency room. The patient had been diagnosed with left-sided pneumothorax a year ago, and no one noticed the azygos lobe at that time. We report the intraoperative findings and comparative images of a migratory azygos lobe.

Keywords: Azygos lobe, Computed tomography, Video-assisted thoracic surgery, Spontaneous pneumothorax, Case report

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