양측성 상대정맥 기형을 동반한 기관성 기관지 1예

A Case of Tracheal Bronchus Associated with Bilateral Superior Vena Cava Anomaly

저자들은 어렸을 때부터 간헐적인 호흡곤란이 있어 기관지 천식으로 치료를 받아온 과거력이 있는 20세 남자에서 군입대 신체검사를 위해 시행한 흉부전산화단층촬영과 굴곡성 기관지내시경 검사상 우연히 발견된 양측성 상대정맥 기형을 동반한 기관성 기관지 1예를 경혐하였기에 문헌 고찰과 함께 보고하는 바이다.

A tracheal bronchus, an aberrant bronchus arising directly from the trachea, is an infrequent congenital anomaly. The incidence of this anomaly ranges from 0.5 to 5%. It usually originates from the right lateral wall of the trachea at the level <2 cm above the tracheal bifurcation. These patients usually are asymptomatic, but some patients may experience recurrent pneumonia, chronic bronchitis, bronchiectasis, or asthmatic episodes. A tracheal bronchus may be associated with other anomalies such as a tracheal stenosis, pulmonary agenesis, pulmonary sequestration, congenital heart disease, a pulmonary venous anomaly and Down's syndrome. This anomaly is usually diagnosed incidentally during bronchoscopy in patients with respiratory problems. Here we report a case of a 20-year-old man with a past history of bronchial asthma, which was incidentally diagnosed as a tracheal bronchus during a medical examination prior to military service, and was associated with a bilateral superior vena cava anomaly.