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 一、病因與病理左頭臂靜脈經(jīng)過前胸鎖關(guān)節(jié)后方斜向右下,斜越主動(dòng)脈弓前上方及主動(dòng)脈分支的前方匯入上腔靜脈。當(dāng)胸鎖關(guān)節(jié)骨質(zhì)增生、肌肉纖維化或肥厚、主動(dòng)脈硬化主動(dòng)脈弓突出及前上縱隔腫瘤,使左頭臂靜脈受壓時(shí),會(huì)造成左 (共 1666 字) [閱讀本文] >>