SACV - Serviço de Angiologia e Cirurgia Vascular
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- Malignant carotid body tumor: a case reportPublication . Dias da Silva, A.; O`Donnel, S.; Gillespie, D.; Goff, J.; Shriver, C.; Rich, N.Abstract Carotid body tumors (CBTs) have an unpredictable history with no correlation between histology and clinical behavior. Of reported cases since 1891, local and distant metastases appear in approximately 10% of cases and remain the hallmark of malignancy. Currently, there are not enough data to support a single treatment regimen for malignant CBTs. The reported case demonstrates some unanswered issues with regard to malignant CBTs to include lymph node dissection, the need for carotid resection, and the role of radiation therapy. A 46-year-old pathologist underwent a resection of a Shamblin I CBT, to include jugular lymph node sampling, without complication. There was lymph node involvement, and tumor cells were found on the margins of the pathologic specimen. Subsequent carotid resection with reversed interposition saphenous vein graft and modified neck dissection were performed again without complication. Follow-up at 4 years has been uneventful. Diagnosis of CBTs with the use of magnetic resonance angiography, magnetic resonance imaging, color flow duplex scanning, and the role of arteriography are reviewed. The current treatment options are discussed with reference to primary lymph node sampling, carotid resection, and neck dissection in malignant cases. This case demonstrates that the unpredictable nature of CBTs and their malignant potential warrant aggressive initial local treatment to include jugular lymph node sampling and complete tumor resection.
- Vascular Surgery and TransplantationPublication . PEREIRA, M.C.Rev Port Cir Cardiotorac Vasc. 2003 Oct-Dec;10(4):215-217. [Vascular Surgery and Transplantation] [Article in Portuguese] Pereira MC. Abstract As Honorary President of the Joint Meeting of Portuguese Society for Cardiothoracic and Vascular Surgery and the Portuguese Society of Transplantation, the author addressed a conference in which he emphasized the straigth links existing between Vascular Surgery and Organ Transplantation Surgery, and describes his professional course and the historical development of transplantation in its Department and Hospital, as well as in the remaining country, an area in which he was proeminent protagonist and pionner, leading to his nomination to distinguished functions of National Coordinator of Organ Transplantation in Portugal. PMID: 15146258 [PubMed - as supplied by publisher]
- Evaluation of diabetic foot amputation ratePublication . HORTA, C.; VILAVERDE, J.; MENDES, P.; GONCALVES, I.; SERRA, L.; PINTO, P.S.; ALMEIDA, R.; CARVALHO, R.; DORES, J.; SERRA, M.B.Acta Med Port. 2003 Nov-Dec;16(6):373-80. Epub 2003 Dec 1. [Evaluation of diabetic foot amputation rate]. [Article in Portuguese] Horta C, Vilaverde J, Mendes P, Gonçalves I, Serra L, Pinto PS, Almeida R, Carvalho R, Dores J, Serra MB. Serviços de Endocrinologia, Ortopedia e Cirurgia Vascular, Hospital Geral de Santo António, Porto. Abstract In 1987, it was created the first portuguese Diabetic Foot Clinic in Oporto, at the Hospital Geral de Santo António. The distinction between neuropathic and ischaemic foot was the key stone to reduce drastically the rate of major amputations in the first two years of activity. Since then and until 1995 the rate of major amputations had stabilised around 8%. The aim of the present study was to evaluate if there was any change in the last three years. A retrospective study was performed reviewing the clinical files of 843 new patients between 1998 and 2000. The 593 patients who presented with a foot ulcer with or without infection were selected: 60.4% with neuropathic foot and 39.6% with ischaemic one. Overall, 31 of the 593 patients with ulcer or infection were treated with major amputation (5.2%). There was a statistical difference between the major amputation outcome among the two types of foot (p < 0.001). Necrosis showed to carry a poor prognosis (30.7% in ischaemic foot vs 8,3% in neuropathic, p = 0.024). There was no further statistical significance for age, sex, type or duration of diabetes as risk factors for major amputation. This retrospective study has showed a slight reduction in the rate of major amputations since 1995. Poor prognosis was related to necrosis and ischaemic foot. Further improvement requires harder investment in patients' education, as well as in alerting the primary health care physicians, for the most unpredictable catastrophic complication of diabetes. PMID: 15631847 [PubMed - indexed for MEDLINE]
- FENÓMENO DE RAYNAUD: ÚLCERAS DIGITAISPublication . Silva, I.
- Transposição da Veia Basílica: um contributo para a melhoria da técnica cirúrgicaPublication . Norton-Matos, A.; Nogueira, C.; Queiros, J.; Silva, F.; Rocha, S.; Azevedo, P.; Machado, R.; Mergulão-Mendonça, J.Introdução: O aumento crescente da população em hemodiálise tem implicado o recurso a acessos vasculares de maior complexidade técnica. A introdução de modificações na técnica cirúrgica da transposição da veia basílica (TVB) pretende agilizar o procedimento e diminuir a sua morbilidade. Métodos: Análise prospectiva das TVB efectuadas no CHP-HSA entre Setembro de 2005 e Setembro de 2009. Resultados: Efectuaram-se 74 TVB em 74 doentes, os quais tinham,em média, 2 acessos autólogos prévios. A TVB foi o primeiro acesso em 20,3% dos doentes. O intervalo médio de seguimento foi de 14,5 meses. Ocorreram 2 falências nos primeiros 30 dias. A taxa de patência secundária aos 3, 12 e 24 meses foi de 95,7%, 85,1% e 62,2%, respectivamente. A Diabetes associou-se a pior taxa de patência(p=0,018). A taxa de complicações perioperatórias foi de 28,4%, sendo a infecção a mais frequente (n=6, 8,1% do total de TVB). A trombose foi a principal causa de falência, tendo ocorrido em 24,3% de todas as TVB. Conclusões: Reconhece-se a superioridade do acesso autólogo, como a melhor opção de acesso vascular para hemodiálise. A TVB é subutilizada, devido às exigências técnicas e necessidades logísticas. Melhoramos a técnica cirúrgica e de tunelização, ao reduzir o tamanho das incisões e o tempo cirúrgico. Os nossos resultados revelaram uma boa patência a longo prazo, pelo que consideramos que deve ser mais utilizada.
- Pé de Charcot: Uma visão actual da neuroartropatia de CharcotPublication . Pinheiro, A.A neuroartropatia de Charcot (NAC) é uma deformidade osteoarticular do pé neuropático causada predominantemente pela Diabetes. O atraso no diagnóstico e tratamento da NAC pode conduzir à ulceração e amputação do pé, daí a importância de um diagnóstico e tratamento precoce. O mecanismo exato da patogénese da NAC ainda não está estabelecido, considerando-se que quer a teoria neurotraumática quer a neurovascular poderão ter um papel importante. O diagnóstico da NAC aguda é predominantemente clínico, apresentando-se o pé afectado com hiperemia, edema e elevação da temperatura. Na fase crónica o pé não apresenta sinais inflamatórios mas mantém o edema e apresenta várias deformidades resultantes do atingimento osteoarticular e muscular. Embora vários autores tenham apresentado diferentes sistemas de classificação com alguma importância clínica, estes não possuem valor prognóstico. A NAC é uma neuroartropatia com consequências individuais e sociais importantes, que estando predominantemente associada à epidemia da Diabetes, merece especial atenção a fim de diagnosticarmos e tratarmos precocemente esta complicação decorrente deste grave problema de saúde pública. O objectivo deste trabalho centrou-se na revisão bibliográfica da NAC a fim de adquirir os conhecimentos mais recentes nas várias dimensões desta patologia, nomeadamente epidemiologia, patogénese, apresentação clínica, diagnóstico e formas de classificação. Foi realizada uma pesquisa na pubmed/medline com as palavras “Charcot foot” e “Charcot neuroarthropathy”, selecionando sobretudo artigos publicados nos últimos 15 anos, incluindo artigos originais e de revisão.
- Raynaud and digital ulcers in patients with juvenile systemic sclerosis: ambulatory iloprost protocol. A single center experiencePublication . Guedes, M.; Zilhão, C.; Almeida, I.; Silva, I:
- Radiation Exposure in Endovascular Infra-Renal Aortic Aneurysm Repair and Factors that Influence ItPublication . Machado, R.; Ferreira, Vi.; Loureiro, L.; Gonçalves, J.; Oliveira, P.; Almeida, R.Objective: The endovascular repair of aortic abdominal aneurysms exposes the patients and surgical team to ionizing radiation with risk of direct tissue damage and induction of gene mutation. This study aims to describe our standard of radiation exposure in endovascular aortic aneurysm repair and the factors that influence it. Methods: Retrospective analysis of a prospective database of patients with abdominal infra-renal aortic aneurysms submitted to endovascular repair. This study evaluated the radiation doses (dose area product (DAP)), fluoroscopy durations and their relationships to the patients, aneurysms, and stent-graft characteristics. Results: This study included 127 patients with a mean age of 73 years. The mean DAP was 4.8 mGy.m2, and the fluoroscopy time was 21.8 minutes. Aortic bilateral iliac aneurysms, higher body mass index, aneurysms with diameters larger than 60 mm, necks with diameters larger than 28 mm, common iliac arteries with diameters larger than 20 mm, and neck angulations superior to 50 degrees were associated with an increased radiation dose. The number of anatomic risk factors present was associated with increased radiation exposure and fluoroscopy time, regardless of the anatomical risk factors. Conclusion: The radiation exposure during endovascular aortic aneurysm repair is significant (mean DAP 4.8 mGy.m2) with potential hazards to the surgical team and the patients. The anatomical characteristics of the aneurysm, patient characteristics, and the procedure's technical difficulty were all related to increased radiation exposure during endovascular aortic aneurysm repair procedures. Approximately 40% of radiation exposure can be explained by body mass index, neck angulation, aneurysm diameter, neck diameter, and aneurysm type.
- Endovascular Abdominal Aneurysm Repair in Women: What are the Differences Between the Genders?Publication . Machado, R.; Teixeira, G.; Oliveira, P.; Loureiro, L.; Pereira, C.; Almeida, R.Introduction: Abdominal aortic aneurysm has a lower incidence in the female population, but a higher complication rate. It was been hypothesized that some anatomical differences of abdominal aortic aneurysm in women could be responsible for that. We proposed to analyze our data to understand the differences in the clinical and anatomical characteristics and the outcomes of patients undergoing endovascular aneurysm repair, according to gender. Methods: A retrospective analysis of patients undergoing endovascular aneurysm repair between 2001-2013 was performed. Patients were divided according gender and evaluated regarding age, atherosclerotic risk factors, aneurysm anatomic features, endograft type, anesthesic risk classification, length of stay, reinterventions and mortality. Two statistical studies were performed, first comparing women and men (Group A) and a second one comparing women and men, adjusted by age (Group B). Results: Of the 171 patients, only 5.8% (n=10) were females. Women were older (P<0.05) and the number of women with no atherosclerotic risk factor was significantly higher. The comparison adjusted by age revealed women with statistically less smoking history, less cerebrovascular disease and ischemic heart disease. Women had a trend to more complex anatomy, with more iliac intern artery aneurysms, larger aneurysm diameter and neck angulations statistically more elevated. No other variables were statistically different between age groups, neither reintervention nor mortality rates. Conclusion: Our study showed a clear difference in the clinical characteristics of women. The female population was statistically older, and when compared with men adjusted by age, had less atherosclerotic risk factors and less target organ disease. Women showed a more complex anatomy but with the same outcomes.
- Endovascular Treatment of Isolated Chronic Abdominal Aortic DissectionPublication . Machado, R.; Rego, D.; Loureiro, L.; Almeida, R.Isolated acute abdominal aortic dissection is a relatively rare event. Its natural history is not fully understood and its optimal treatment is not established. Open surgery represents the most described treatment but endovascular intervention has had increasing application. Isolated chronic abdominal aortic dissection is even less described in the literature. We describe three patients with isolated chronic abdominal aortic dissection who underwent endovascular treatment in our institution. Mean age at presentation was 82 years. Indication for surgical intervention was aneurismal degeneration. Mean aortic diameter at presentation was 46.7 mm. There was no perioperative mortality or reinterventions. Mean follow-up was 5.3 years (2-12 years). Late reintervention was needed in one patient, eight years after initial surgery, due to type 1 endoleak. According to our experience, endovascular intervention represents an effective and durable treatment option in isolated chronic abdominal aortic dissection. However, long-term follow-up is mandatory. Furthermore, larger studies are still needed to understand this disease and its adequate treatment.