特発性上行大動脈血栓症に手術を行った1例

Idiopathic Ascending Aortic Thrombosis with Multiple Embolism：Report of a Case

はじめに　上行大動脈血栓症はまれな疾患であり，多くは凝固系の異常を伴う基礎疾患をもつとされている1～3）．われわれは，多発塞栓症を契機に診断された血栓性素因をもたない特発性上行大動脈血栓症に対する手術例を経験したので報告する．

Ascending aorta thrombosis unaccompanied by an aneurysm or a primary hypercoagulable state is rare. We report a surgical case of ascending aorta thrombosis with multiple emboli. A 44-year-old woman visited the hospital for evaluation of dysarthria and was diagnosed with multiple cerebral infarcts. Contrast-enhanced computed tomography （CT） revealed a mass in the ascending aorta and the brachiocephalic artery. We performed emergency removal of the masses and endarterectomy with cardiopulmonary bypass under hypothermic circulatory arrest. Histopathological examination of the resected specimen showed thrombi. The patient had an uneventful recovery and was discharged 12 days postoperatively. No recurrent thrombus or hypercoagulable state was observed for 3 years postoperatively.