Niizeki Takeshi, Ishino Mitsunori, Kitahara Tatsuro, Yamauchi So, Ikeno Eiichiro, Kubota Isao
Department of Cardiology, Okitama Public General Hospital, Yamagata, Japan.
First Department of Internal Medicine, Yamagata University School of Medicine, Yamagata, Japan.
Clin Med Insights Case Rep. 2016 Feb 29;9:11-4. doi: 10.4137/CCRep.S38175. eCollection 2016.
An 87-year-old male was admitted with intermittent claudication of the left calf. We performed lower extremity angiography, which revealed stenosis of the left popliteal artery. Intravascular ultrasound (IVUS) image correctly identified the cystic appearance of visualized extravascular hypodensity, causing extrinsic compression of the lumen. We diagnosed the condition as cystic adventitial degeneration (CAD) of the popliteal artery. We operated a resection of a cyst with the artery and replaced the autovein graft (saphenous vein). After surgery, the patient was free of symptoms. CAD is a rare disease; thus, our IVUS findings may provide unique diagnostic clues in patients with CAD.
一名87岁男性因左小腿间歇性跛行入院。我们进行了下肢血管造影，结果显示左腘动脉狭窄。血管内超声（IVUS）图像正确识别出可见的血管外低密度区呈囊性外观，导致管腔受到外部压迫。我们将该病症诊断为腘动脉囊性外膜退变（CAD）。我们对囊肿与动脉一并进行了切除，并置换了自体静脉移植物（大隐静脉）。术后，患者症状消失。CAD是一种罕见疾病；因此，我们的IVUS检查结果可能为CAD患者提供独特的诊断线索。
