Inferior vena cava agenesis (IVCA) is a rare anomaly predisposing affected people to lower-limb venous thrombosis with low frequency of pulmonary embolism. Antenatal thrombosis and inherited thrombophilia have been suggested as causes of IVCA. However, there is little evidence on the clinical course and management of this condition. We designed a patient registry to assess the thrombotic risk and features of IVCA.

中文翻译：

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下腔静脉发育不全患者的血栓形成风险和特征：一项多中心、回顾性、观察性研究


下腔静脉发育不全 （IVCA） 是一种罕见的异常，使患者易患下肢静脉血栓形成，肺栓塞发生率低。产前血栓形成和遗传性易栓症被认为是 IVCA 的原因。然而，关于这种疾病的临床病程和管理的证据很少。我们设计了一个患者登记处来评估 IVCA 的血栓形成风险和特征。