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Query: UMLS:C0004153 (atherosclerosis)
 77,401 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

True aneurysm of the subclavian artery is extremely rare. Excluding the more common aneurysms of an aberrant right subclavian artery, those associated with thoracic outlet syndrome, and posttraumatic "aneurysms," atherosclerosis is the most common cause. Syphilis, tuberculosis, and cystic medial necrosis are less often the cause. These aneurysms can rupture, thrombose, embolize, or cause symptoms by local compression. Surgical treatment is generally indicated, and has evolved from ligation procedures to extirpation or endoaneurysmorrhaphy to the present practice of resection with revascularization. A case of a surgically treated, asymptomatic, atherosclerotic aneurysm of the intrathoracic left subclavian artery is presented, with a review of the English-language literature on the subject.
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PMID:Atherosclerotic aneurysm of the intrathoracic subclavian artery: a case report and review of the literature. 787 37

True aneurysm of the subclavian artery is extremely rare and atherosclerosis is the most common cause. Syphilis, tuberculosis, and cystic medial necrosis are less often the cause. Their exact prevalence in the general population is unknown. These aneurysms can rupture, thrombose, embolize or cause symptoms by local compression. In reviewing the literature the great latency of the disease, high complication rate at presentation and the significant incidence, concomitant aneurysms elsewhere are emphasized. Duplex scanning followed by angiography should be performed in order to establish the diagnosis and to plan the operation. Elective surgical treatment is associated with little risk to the patient and avoids the need for emergency operations. Two cases of surgically treated true subclavian aneurysms are presented with review of the English language literature on the subject.
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PMID:Subclavian artery aneurysms. A report of 2 cases and a review of the literature. 978 86

True aneurysm formation in arterialized autologous veins is an unusual complication. We studied a patient with 2 aneurysms occurring in the mid and distal portion of an in situ femoropopliteal bypass. The first aneurysm led to graft occlusion 4 years after the primary intervention, requiring replacement of the ectatic graft segment. The graft was still patent when the patient was examined 7 years after the primary intervention and 3 years after the first aneurysm. In the mid portion of the graft, a true aneurysm measuring 5 by 8 cm had developed. The aneurysm was replaced by a reversed segment of the contralateral greater saphenous vein. Recovery was uneventful. Advanced atherosclerotic changes with extensive intimal fibroplasia, subendothelial cholesterol deposits, and ulcerations were revealed by means of histopathology of the aneurysm wall. Atherosclerosis is considered to be the main cause of aneurysm formation in vein grafts, but a review of the literature suggests the additional etiopathogenic factors should be further investigated.
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PMID:Infrainguinal aneurysm formation in arterialized autologous saphenous vein grafts. 1023 49

True aneurysm formation in arterialized autologous veins is an unusual complication. A saccular aneurysmal degeneration of 53 mm (maximal diameter) of a saphenous vein graft inserted for repair of a popliteal aneurysm, four years after implantation, is reported. The patient (with prior history of abdominal aortic aneurysm) had been initially treated through a posterior approach. A new saphenous vein bypass grafting (medial approach) was performed. Histological examination revealed myointimal fibrosis, medial degeneration and inflammation. In spite of the widespread use of the autologous saphenous vein as an arterial substitute, this complication is extremely rare and its etiology remains unclear. Atherosclerosis is considered to be the main cause of aneurysm formation in vein grafts, but current data suggest that additional etiopathogenic factors should be further investigated. We note the rarity of this finding and review the literature for true aneurysm formation within vein grafts used for bypass procedures.
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PMID:Aneurysmal degeneration of a saphenous vein graft following the repair of a popliteal aneurysm: case report and literature review. 2392 43