title: A case of balanced type double aortic arch diagnosed incidentally by transthoracic echocardiography in an asymptomatic adult patient.
abstract: A 36-year-old male patient with no remarkable medical history was admitted to our hospital for a health check up. On chest radiography, bilateral aortic notches at the level of aortic arch were shown suggesting aortic arch anomaly without any clinical symptoms. Two aortic arches were almost same-in-size on suprasternal view of transthoracic echocardiography. In addition, multidetector computed tomography showed balanced type double aortic arch forming a complete vascular ring which encircled the trachea and esophagus. The trachea was slightly compressed by the vascular ring whereas the esophagus was intact. Nevertheless, the pulmonary function test was normal. The patient was discharged from hospital with instructions for periodic follow-up.
authors.affiliation: Department of Internal Medicine, National Police Hospital, Seoul, Korea.
authors.forename: Han Seok
authors.initials: HS
authors.lastname: Seo
authors.forename: Yong Hyun
authors.initials: YH
authors.lastname: Park
authors.forename: Ju Hyoung
authors.initials: JH
authors.lastname: Lee
authors.forename: So Chong
authors.initials: SC
authors.lastname: Hur
authors.forename: Yu Jin
authors.initials: YJ
authors.lastname: Ko
authors.forename: So Yeon
authors.initials: SY
authors.lastname: Park
authors.forename: Jun Hwan
authors.initials: JH
authors.lastname: Kim
authors.forename: Young Jung
authors.initials: YJ
authors.lastname: Kim
authors.forename: So Yon
authors.initials: SY
authors.lastname: Kim
authors.forename: Nak Hyun
authors.initials: NH
authors.lastname: Kwon
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