Bachouch I, Belloumi N, Attia M, Chermiti Ben Abdallah F, Hantous Zannad S, Fenniche S
Pulmonology Department Pavilion 4, Abderrahmen Mami Hospital, Tunisia.
Department of Radiology, Abderrahmen Mami Hospital, Tunisia.
Case Rep Vasc Med. 2021 Jun 19;2021:5597105. doi: 10.1155/2021/5597105. eCollection 2021.
Persistent left superior vena cava (PLSVC) is a rare anomaly of the thoracic venous system. . We present a case of a patient with isolated asymptomatic PLSVC, who was diagnosed because of dyspnea revealing an associated asthma. An 18-year-old male patient complained of paroxystic sibilant dyspnea. He did not have any anomaly in physical examination. The chest X-ray revealed cardiomegaly with a widening of lower mediastinum. The electrocardiogram does not show any anomaly. Echocardiography showed the PLSVC. The thoracic contrast computed tomography of the chest showed ecstasies of the right cardiac cavities and a double superior vena cava. The patient did not have similar family cases. Respiratory functional explorations led to the diagnosis of an associated asthma. Currently, he is followed up periodically. Asthma was improved with inhaled corticosteroid treatment.
PLSVC is rare but can have important clinical implications. Associated severe cardiac malformations must be systematically sought.
永存左上腔静脉（PLSVC）是一种罕见的胸段静脉系统异常。我们报告一例孤立性无症状PLSVC患者，该患者因呼吸困难就诊，检查发现合并哮喘。一名18岁男性患者主诉发作性喘息性呼吸困难。体格检查未发现任何异常。胸部X线显示心脏增大，纵隔下部增宽。心电图未显示任何异常。超声心动图显示PLSVC。胸部增强CT显示右心腔扩张和双上腔静脉。该患者无类似家族病例。呼吸功能检查诊断为合并哮喘。目前，患者接受定期随访。吸入糖皮质激素治疗后哮喘症状改善。
PLSVC虽罕见，但可能具有重要临床意义。必须系统排查是否合并严重心脏畸形。
