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25 Possible Causes for Prominent Aortic Knob

  • Patent Ductus Arteriosus

    Closure of a patent ductus arteriosus (PDA) in the elderly is a high-risk procedure because of tissue fragility and many possible complications. The patient in our case was an 81-year-old woman with a window-type PDA caused by cardiac failure. Based on the anatomy of the PDA and aorta and to minimize invasion, we[…][]

  • Aortic Valve Stenosis

    Aortic stenosis (AS) is the most commonly acquired valvular heart disease in the Western world (2-7% of the population aged 65 years) and the mortality for untreated symptomatic severe AS is up to 50-60% at 2 years in high-risk patients. This review summarizes laboratory and recent clinical investigations[…][]

  • Marfan Syndrome

    Marfan syndrome is one of the most common connective tissue diseases and may manifest with a range of symptoms and pathologic changes. We present a retrospective series of 5 cases of patients with Marfan syndrome and pulmonary pathology. Patients were young to middle-aged adults with absent or minimal smoking[…][]

  • Thoracic Aortic Aneurysm

    An 87-year old man with a past medical history of a descending aortic aneurysm for 20 years presented with progressive dysphagia and aspiration pneumonia. Computed tomography angiography demonstrated the impending rupture of the thoracic aortic aneurysm (TAA) and endoscopic examinations revealed the extrinsic[…][]

  • Ankylosing Spondylitis

    Abstract An increased vascular risk is present in patients with ankylosing spondylitis (AS). In this report, we evaluate the presence and grade of atherosclerosis in patients with AS, uninterruptedly treated with tumor necrosis factor-α (TNF-α) antagonists for 2 years, in comparison to that in a nontreated group[…][]

  • Non-Cranial Giant Cell Arteritis

    […] doi: 10.1097/WNO.0000000000000529 Original Contribution Abstract Author Information Authors Article Outline Outline Article Metrics Metrics Giant cell arteritis (GCA) is a systemic vasculitis of medium and large arteries often with ophthalmic involvement, including ischemic optic neuropathy, retinal artery occlusion, and[…][]

  • Dissecting Aortic Aneurysm

    This is a case report of a 37-year-old Japanese woman with primary aldosteronism who was found to have high plasma renin activity during toxemia of pregnancy and who died of a dissecting aneurysm of the aorta about 2 years later. The autopsy findings showed cystic medial necrosis in the aorta and a right[…][]

  • Traumatic Aortic Rupture

    Abstract The currently accepted mechanism to explain traumatic aortic rupture from rapid deceleration involves a combination of traction, torsion, and hydrostatic forces. The authors hypothesize that aortic isthmus lacerations result from a pinch of the aorta between the spine and the anterior bony thorax[…][]

  • Kyphoscoliosis

    There are often a prominent pulmonary artery segment and lack of prominence of the aortic knob.[]

  • Discrete Fibromuscular Subaortic Stenosis

    The heart size is usually normal in children, but a dilated ascending aorta or a prominent aortic knob may be seen occasionally in valvular AS, resulting from poststenotic[]

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