Cardiovascular and interventional radiology
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Cardiovasc Intervent Radiol · Jan 2005
Case ReportsSurgical repair of a post-traumatic arteriovenous fistula complicated by stent-graft misplacement.
An arteriovenous fistula (AVF) is an abnormal connection between an artery and a vein which may result from a traumatic injury or occur as a congenital abnormality. It may be asymptomatic or may present with a variety of symptoms. Surgical or endovascular treatment can be preferred. We present a case of unsuccessful percutaneous treatment of a femoral AVF due to misplacement of the stent-grafts, necessitating surgical correction.
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Cardiovasc Intervent Radiol · Jan 2005
Case ReportsAn arteriovenous fistula between the internal mammary artery and the pulmonary vein following blunt chest trauma.
A 67-year-old man suffered a traffic accident and was transferred to an emergency hospital close to the scene. He was diagnosed to have bilateral pneumohemothorax with a lung contusion, an anterior fracture dislocation of the C6-vertebra and a cervical cord injury at the level of C7. On the 48th day, massive hemoptysis was suddenly recognized. ⋯ On the next day, a selective left internal mammary arteriogram showed an arteriovenous fistula between the left internal mammary artery and the left pulmonary vein without any apparent extravasation. The arteriovenous fistula was successfully embolized using platinum fiber coils. The patient no longer demonstrated any hemoptysis after embolization.
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Cardiovasc Intervent Radiol · Nov 2004
Primary stenting of subclavian and innominate artery occlusive disease: a single center's experience.
To review immediate and midterm results of primary stenting for innominate and subclavian artery occlusive lesions. ⋯ Stenting of subclavian and innominate artery lesions resulted in immediate resolution of patients' symptoms with durable midterm effect and few complications in a larger patient group with serious comorbid conditions.
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Cardiovasc Intervent Radiol · Nov 2004
Case ReportsTranscatheter arterial embolization of concurrent spontaneous hematomas of the rectus sheath and psoas muscle in patients undergoing anticoagulation.
We report a case of concurrent rectus sheath and psoas hematomas in a patient undergoing anticoagulant therapy, treated by transcatheter arterial embolization (TAE) of inferior epigastric and lumbar arteries. Computed tomography (CT) demonstrated signs of active bleeding in two hematomas of the anterior and posterior abdominal walls. ⋯ We successfully performed TAE of the feeding arteries. There have been few reports in the literature of such spontaneous hemorrhages in patients undergoing anticoagulation, successfully treated by TAE.
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Cardiovasc Intervent Radiol · Sep 2004
Review of source images is necessary for the evaluation of gadolinium-enhanced MR angiography for renal artery stenosis.
The purpose of this study was to assess interobserver variability and accuracy in the evaluation of renal artery stenosis (RAS) with gadolinium-enhanced MR angiography (MRA) and digital subtraction angiography (DSA) in patients with hypertension. The authors found that source images are more accurate than maximum intensity projection (MIP) for depicting renal artery stenosis. Two independent radiologists reviewed MRA and DSA from 38 patients with hypertension. ⋯ In this study, source images are significantly more accurate than MIP images in one reader with a similar trend was observed in the second reader. The interobserver variability was excellent. When renal artery stenosis is a consideration, high accuracy can only be obtained when source images are examined.