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Innominate artery ligation emerged in the 19th century as an early operation for right subclavian aneurysm. Clinical outcomes were often dire, but undeterred surgeons believed that ligation represented an opportunity that outweighed the risks of nonoperative aneurysm management. Valentine Mott of New York performed the procedure in 1818; his patient died 26 days later. Variations on Mott's approach were undertaken 13 more times from 1822 to 1861 by surgeons in the United States and abroad, all of which proved fatal. Andrew Woods Smyth of New Orleans was the first to successfully control a subclavian artery aneurysm with innominate ligation in 1864. The Charity Hospital house surgeon used a series of ligations on the innominate, common carotid, vertebral, and internal mammary arteries to prevent collateral and recurrent blood flow to the aneurysmal sac. These physiologically-oriented operations kept Smyth's patient alive and functional for ten years. New Orleans became an internationally-recognized hub for advancements in aneurysm surgery. One of Smyth's students, Rudolph Matas, went on to revolutionize vascular surgery. Along his path to becoming the Father of modern vascular surgery, Matas documented his own performance of Smyth's operation at Charity 4 times over the course of his career. Although later supplanted by primary vascular anastomosis and grafting, the first successful innominate ligation was a collaborative effort between New York and New Orleans that served as a foundation for the development of modern aneurysm repair.

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The most acclaimed surgeon of his time, Astley Cooper, a man from Norfolk and a student of the eminent John Hunter, was an outstandingly successful surgeon. With his accomplishments in surgery and experiments in dissection he soon became a prominent figure and received recognition worldwide. At the young age of 21 he was appointed Demonstrator in Anatomy at St Thomas's Hospital in London and two years later was made Joint Lecturer in Anatomy and Surgery. With his passion for anatomy, his love for surgery and his expanding knowledge he became Surgeon to Guy's Hospital in 1800 and in the same year was elected a Fellow to the Royal Society. His attainments led him to become surgeon to three successive British monarchs as well as receiving a bestowal of Baronetcy. Through his edifying lectures, fastidious experiments and publications on anatomy and pathology he has inspired and enlightened many budding anatomists and surgeons and the principles of his teachings still prevail in practice today.

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Os aneurismas venosos são raros, porém causam complicações tromboembólicas. Na maioria das vezes, são encontrados como achados de exame físico ou de imagem. Os aneurismas sintomáticos de veia poplítea são tratados por reparo cirúrgico, devido ao alto risco de recorrência de embolia pulmonar. A técnica mais utilizada é a aneurismectomia tangencial com venorrafia lateral. Na impossibilidade de se empregar esta técnica, faz-se a ressecção com reconstrução venosa. Os autores relatam o caso de uma paciente com aneurisma de veia poplítea, cujo diâmetro era de 44 mm, submetida à aneurismectomia tangencial e venorrafia lateral, com sucesso.

Venous aneurysms are rare; however, they are potential causes of thromboembolism. Most cases are found as clinical examination or by imaging methods. Symptomatic aneurysms of the popliteal vein are treated by surgical repair due to the high risk of recurrent pulmonary embolism. The most widely used procedure is tangential aneurysmectomy and lateral venorrhaphy. If this technique is not possible, the aneurysm should be removed and venous reconstruction should be performed. The authors report the case of a patient with popliteal vein aneurysm measuring 44 mm in diameter which was successfully treated by tangential aneurysmectomy and lateral venorrhaphy.

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Management of popliteal aneurysms remains controversial. Debate continues as to when an asymptomatic popliteal aneurysm should be treated and, with concerns regarding the fate of a bypassed popliteal aneurysm and the advent of intravascular stents, what procedure is best. This paper reviews the history of popliteal artery aneurysm management with particular emphasis on treatment and results before the modern era of arterial reconstruction. The aim of treatment then was to induce thrombosis. Now it is to prevent thrombosis.

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Este trabajo fue escrito por el primer profesor de la Escuela Dental de Buenos Aires en 1910. Relata un caso clínico interesante que él considera como aneurisma.

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Este trabajo fue escrito por el primer profesor de la Escuela Dental de Buenos Aires en 1910. Relata un caso clínico interesante que él considera como aneurisma.(AU)

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Popliteal aneurysms are rare and tend to occur in older men with significant co-morbidity. Historically, management of popliteal aneurysms can be considered in three broad groups: (i) the technique of Antyllus; (ii) techniques relying upon a collateral circulation; and (iii) techniques involving maintenance or restoration of circulation. Bypass and exclusion is currently been challenged by endovascular techniques which show promise in selected cases. Current controversies in popliteal aneurysms management are: when to repair asymptomatic aneurysms, what operation to do and how to manage acute thrombosis. These have been addressed by studying, prospectively, 73 patients presenting with 116 popliteal aneurysms. Diameter greater than 2 cm is often stated as being an indication for elective operation in asymptomatic popliteal aneurysms. However, distortion of the aneurysm appears to be at least as important as size in determining whether symptoms are likely to develop. Of 17 popliteal aneurysms followed for a median of 34 months with a diameter 2-3 cm and distortion less than 45 degrees , none thrombosed. This is no worse than patency following elective bypass (P = 0.064). Popliteal aneurysms greater than 3 cm in diameter in patients who are unfit or who declined an operation were significantly more likely to develop thrombosis or any other symptom (P = 0.01 and P = 0.004, respectively). Popliteal aneurysms less than 3 cm in diameter with distortion less than 45 degrees can safely be managed by ultrasound surveillance. Popliteal aneurysms with greater diameter or distortion are best operated upon. Bypass, combined with proximal and distal ligation of the aneurysm, resulted in 5-year graft patency of 78% and 65% for popliteal aneurysms originally patent or thrombosed, respectively, with good long-term exclusion of the aneurysm. In addition to the general complications of intra-arterial thrombolysis, acute deterioration of the limb during lysis appears to be a particular problem when dealing with thrombosed popliteal aneurysms. It occurs in about 13% of cases which compares with 2% when dealing with thrombosed grafts or native arteries. Intra-arterial thrombolysis for thrombosed popliteal aneurysms is associated with unacceptably high numbers of complications and thrombolysis should be reserved for intra-operative use only.

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Subarachnoid hemorrhage (SAH) from aneurysmal origin was regarded for long time as a stroke like others vascular attacks. The specific identity of SAH is only recognized anatomically in the XVIIIth century and clinically in the XIXth century. The aneurysmal etiology and the treatment become regular only in the second half of the XXth century.

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On December 12, 1785, the famous British surgeon John Hunter ligated an artery that was feeding a popliteal aneurysm. During the procedure he ligated only the proximal side of the artery and left the aneurysm sac untouched. This is frequently viewed as a landmark event in the history of surgery. There is considerable evidence, however, that another surgeon, Dominique Anel, performed a substantially similar procedure more than 75 years earlier. It is possible that the weight Hunter's name has borne in the history of surgery has led to the procedure's bearing his name rather than that of the lesser known Anel.

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This communication outlines the development of aneurysm clips, from those originally used by Walter Dandy to those in use today. The history is rich, with many contributions from neurosurgical pioneers and innovators. As a result, the modern neurosurgeon has a wide selection of biocompatible aneurysm clips from which to choose, clips that have known closing pressures and various sizes and shapes, as well as a selection of clip applicators that do not obstruct the surgical field.

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Endovascular treatment of aneurysms has only recently become an accepted therapeutic modality. Nonetheless, treatment of aneurysms with the aid of various foreign bodies such as needle and wire insertion with or without electrical current has been reported since the first half of the 19th century. In 1832 Phillips induced clot formation in the femoral and carotid arteries of dogs by leaving needles in the arteries for variable lengths of time. Simultaneously, in France, Velpeau had proposed using "l'acupuncture des arteres dans le traitement des anevrismes." Later, Phillips and Pelrequin connected the offending needles to a source of electrical current in an attempt to increase thrombus formation and aneurysm occlusion. Subsequently, Moore introduced the concept of packing the aneurysm with wire inserted through a needle transfixed to the vessel wall. To this method, Corradi added electrical current. Widely known as the Moore-Corradi technique, it was used in ensuing years with variable success. The early phase of endovascular aneurysm treatment culminated when Blakemore and Moore treated a case of symptomatic cavernous sinus aneurysm by passing wire through the patient's orbit. These pioneering cases combined with technological advances in the diagnosis of intracranial aneurysms paved the way for further refinements in coil embolization of aneurysms.

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