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英文誌(2004-)

Journal of Medical Ultrasonics

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2018 - Vol.45

Vol.45 No.05

Case Report(症例報告)

(0503 - 0506)

Utility of echocardiographic paravertebral approach for detection of endoleaks after thoracic endovascular aortic repair: a case report

Tomoko KUDO1, Satoshi YUDA2, Shoko YAMAGUCHI1, Yuji OHMURA1, Kosuke UJIHIRA3, Shunsuke SASAKI2, Ryushi MARUYAMA3, Yoshihiko KURIMOTO3, Akira YAMADA3, Mitsugu HIROKAMI2

1Division of Clinical Laboratory Medicine, Teine Keijinkai Hospital, 2Department of Cardiology, Teine Keijinkai Hospital, 3Department of Cardiovascular Surgery, Teine Keijinkai Hospital

キーワード : aortic dissection, two-dimensional transthoracic echocardiography, paravertebral approach, thoracic endovascular aortic repair, endoleak

We report a case of chronic type B aortic dissection in a 70-year-old man. At an outpatient hospital, he was found to have an expanded dissecting descending aortic aneurysm and was transferred to our hospital for thoracic endovascular aortic repair (TEVAR). A stent graft was successfully placed in the proximal descending thoracic aorta (DTA) to close the primary entry. Postoperative computed tomography (CT) revealed persistent contrast enhancement of the false lumen in the DTA that was suggestive of an endoleak. However, the origin and flow direction of the endoleak were uncertain, and classification of the endoleak was difficult. Hence, the echocardiographic paravertebral approach (PVA) was performed. Both the true lumen and false lumen were clearly visualized and retrograde flow from the intercostal artery into the false lumen was demonstrated by color Doppler examination. These findings suggested that the endoleak originated from the intercostal artery (type II) rather than the proximal end of the stent graft (type Ia). Hence, it was concluded that the patient should be observed conservatively. Follow-up CT at 8 months post-TEVAR showed no expansion of the maximal diameter of the DTA. In this case, the utility of PVA for detection and classification of an endoleak after TEVAR was confirmed.