Case Report
Copyright ©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Jan 26, 2021; 9(3): 672-676
Published online Jan 26, 2021. doi: 10.12998/wjcc.v9.i3.672
Deep vein thrombosis in patient with left-sided inferior vena cava draining into the hemiazygos vein: A case report
Li Zhang, Wei-Kang Guan
Li Zhang, Wei-Kang Guan, Department of Vascular Surgery, Dazhou Central Hospital, Dazhou 635000, Sichuan Province, China
Author contributions: Zhang L designed the research study; Guan WK performed the research; Zhang L and Guan WK analyzed the data and wrote the manuscript; All authors have read and approve the final manuscript.
Informed consent statement: Informed written consent was obtained from the patient for publication of this report and any accompanying images.
Conflict-of-interest statement: The authors declare that they have no conflicts of interest related to this manuscript.
CARE Checklist (2016) statement: The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Li Zhang, MD, Associate Chief Physician, Department of Vascular Surgery, Dazhou Central Hospital, No. 56 Nanyuemiao Street, Tongchuan District, Dazhou 635000, Sichuan Province, China. 50328731@qq.com
Received: September 5, 2020
Peer-review started: September 5, 2020
First decision: November 14, 2020
Revised: November 22, 2020
Accepted: December 6, 2020
Article in press: December 6, 2020
Published online: January 26, 2021
Processing time: 136 Days and 21.1 Hours
Abstract
BACKGROUND

Abnormalities of the inferior vena cava (IVC) are uncommon, and in many cases they are asymptomatic. Even so, it is vital that clinicians be aware of such anomalies prior to surgery in affected individuals. In the present report, we describe a rare anatomical variation of the IVC.

CASE SUMMARY

A 66-year-old male was admitted to the hospital due to deep vein thrombosis of the right lower extremity. Upon contrast-enhanced computed tomography imaging, we found that this patient presented with a case of left-sided IVC draining into the hemiazygos vein, while his hepatic vein was directly draining into the atrium.

CONCLUSION

Cases of left-sided IVC can increase patient susceptibility to thromboembolism owing to the resultant changes in blood flow and/or associated vascular compression.

Keywords: Left-sided inferior vena cava; Deep vein thrombosis; Hemiazygos vein; Anatomic variation; Case report

Core Tip: We found that one patient with deep venous thrombosis had left-sided inferior vena cava draining into the hemiazygos vein, while his hepatic vein was directly draining into the atrium. It is vital that clinicians be aware of such anomalies prior to surgery in affected individuals.