Chiari網を伴う急性肺血栓塞栓症の1例

Acute Pulmonary Thromboembolism with Chiari Network：Report of a Case

はじめに　Chiari網は胎生期の静脈洞弁の遺残構造物であり，臨床上まれではなく，病的意義はないとされる．われわれは，急性肺血栓塞栓症（PTE）の治療方針の決定に際して，その診断が重要であった症例を経験したので報告する．

A 60-year-old woman was admitted to our hospital for dyspnea. Contrast-enhanced computed tomography （CT） revealed acute pulmonary artery thromboembolism. An echocardiogram showed a movable structure in the right atrium. Emergency surgery was performed under general anesthesia. The movable structure in the right atrium looked like a Chiari network with a diameter of over 5 cm, and no obvious thrombus was found. The patient had a good postoperative course and was discharged home on postoperative day 17. The Chiari network is a remnant structure of the fetal venous sinus valve, and its diagnosis was important for determining the appropriate treatment plan for this case.