Aneurisma poplíteo izquierdo / Left popliteal aneurysm

El aneurisma de la arteria poplítea es el principal aneurisma periférico y el segundo en frecuencia después del aneurisma de la aorta abdominal. Su incidencia se desconoce. Posee un patrón característico de presentación que corresponde a personas del sexo masculinos, mayores de 65 años, con múltiples comorbilidades, donde la hipertensión arterial representa la más frecuente. La definición de aneurisma corresponde a una dilatación del 50 por ciento del diámetro del vaso, en el caso de la arteria poplítea, mayor de 1,5 cm. El 50 por ciento de los aneurismas poplíteos resulta asintomático, el resto presenta síntomas isquémicos (trombosis, embolismos periféricos), compresivos y la ruptura. El tratamiento es quirúrgico: convencional (vías medial-posterior) y endovascular. El objetivo del artículo fue presentar este caso por la infrecuencia del aneurisma de la arteria poplítea unilateral. Se trata de un paciente masculino de 62 años, con aumento de volumen localizado a nivel de la fosa poplítea izquierda con latido y expansión a la palpación, diámetro transversal aproximado de 3 cm y longitudinal de 4 cm, presencia de soplo sistólico a la auscultación con diagnóstico ecográfico y arteriográfico de aneurisma de la arteria poplítea izquierda. La evolución del paciente fue satisfactoria y se mantiene bajo seguimiento médico para evaluar la permeabilidad del injerto sintético(AU)

Popliteal artery aneurysm is the main peripheral aneurysm and the second in frequency after abdominal aortic aneurysm. Its incidence is unknown. It has a characteristic presentation pattern that corresponds to male people, over 65 years of age, with multiple comorbidities, where arterial hypertension represents the most frequent. The definition of aneurysm corresponds to a dilation of 50 percent of the diameter of the vessel, in the case of the popliteal artery, greater than 1.5 cm. 50 percent of popliteal aneurysms are asymptomatic, the rest have ischemic symptoms (thrombosis, peripheral embolisms), compression and rupture. Treatment is surgical: conventional (medial-posterior pathways) and endovascular. The objective of the article was to present this case due to the infrequency of the unilateral popliteal artery aneurysm. This is a 62-year-old male patient, with localized volume increase at the level of the left popliteal fossa with heartbeat and expansion on palpation, approximate transverse diameter of 3 cm and longitudinal diameter of 4 cm, presence of systolic murmur at auscultation with ultrasound and arteriographic diagnosis of aneurysm of the left popliteal artery. The patient's evolution was satisfactory and he remains under medical follow-up to evaluate the permeability of the synthetic graft(AU)

Aneurisma infeccioso primário da aorta: série de casos e revisão da literatura / Primary infectious aortic aneurysm: a case series and review of the literature

Resumo Aneurismas infecciosos, anteriormente chamados de aneurismas micóticos, são raros; acometem com maior frequência a aorta de pacientes jovens e apresentam maior tendência à rotura do que aneurismas de outras etiologias. O formato sacular é o mais característico, e os agentes etiológicos mais comuns são Staphylococcus sp e Salmonella sp. A literatura fornece informações limitadas e imprecisas sobre a correta nomenclatura, diagnóstico e tratamento da doença. Os autores reuniram três casos cujos procedimentos diagnósticos e terapêuticos foram documentados. Além de relatar essa série de casos, realiza-se uma revisão sobre o tema, a fim de estabelecer estratégias diagnósticas e terapêuticas pertinentes.

Abstract Infectious aneurysms, formerly known as mycotic aneurysms, are rare, most often involve the aorta in young patients, and have a greater tendency to rupture than aneurysms of other etiologies. The most characteristic shape is saccular and the most common etiologic agents are Staphylococcus sp. and Salmonella sp. There is scant and imprecise information in the literature about correct nomenclature, diagnosis, and treatment. The authors present three cases in which diagnostic and therapeutic procedures were documented. In addition to reporting this case series, the authors also present a review of the subject, outlining pertinent diagnostic and therapeutic strategies.

Aneurisma de la aorta abdominal asociado a íctero / Aneurysm of the abdominal aorta associated with icterus

El aneurisma de la aorta abdominal como causa de íctero obstructivo es una situación de excepción en la clínica. El objetivo de esta presentación fue exponer la coexistencia del aneurisma de la aorta abdominal y el íctero. Una asociación muy poco frecuente y de difícil diagnóstico, que coloca al cirujano vascular en la toma de una especial conducta terapéutica. La cuidadosa revisión de los antecedentes patológicos y el análisis del comportamiento clínico del paciente permitieron la solución terapéutica adecuada. Se logró demostrar que el íctero obedecía a una lesión maligna de vías biliares conocida como colangiocarcinoma, que concomitó con la existencia de un aneurisma del V segmento aórtico y no fue el resultado de una compresión extrínseca de la dilatación de la aorta, sobre las vías biliares. La conducta quirúrgica, encaminada a erradicar el íctero y evitar la ruptura aneurismática con resección del aneurisma y colocación de prótesis, no resultó posible por lo avanzado de la lesión tumoral y el grado de metástasis ya establecidos. Solo se realizó resección de la vesícula biliar y seguimiento posterior por oncología(AU)

Abdominal aortic aneurysm as a cause of obstructive icterus is an exceptional situation in the clinic. The aim of this presentation was to expose the coexistence of abdominal aortic aneurysm and icterus. A very rare and difficult to diagnose association, which places the vascular surgeon in a special therapeutic approach. The careful review of the pathological history and the analysis of the patient's clinical behavior allowed the appropriate therapeutic solution. It was possible to demonstrate that the icterus was due to a malignant lesion of the biliary tract known as cholangiocarcinoma, which concomitated with the existence of an aneurysm of the V aortic segment and was not the result of extrinsic compression of the dilatation of the aorta on the biliary tract. The surgical procedure, aimed at eradicating the icterus and avoiding aneurysmal rupture with aneurysm resection and prosthesis placement, was not possible due to the advanced tumor lesion and the degree of metastasis already established. Only gallbladder resection was performed and subsequent follow-up by oncology(AU)

Complicaciones posquirúrgicas en pacientes con aneurisma de la aorta abdominal operados electivamente / Post-surgical complications in patients with electively operated abdominal aortic aneurysm

Introducción: Los aneurismas aórticos abdominales constituyen un problema de salud por la alta mortalidad que provocan. Su seguimiento y tratamiento son fundamentales para evitar las complicaciones posquirúrgicas. Objetivo: Caracterizar las principales complicaciones posquirúrgicas de los pacientes con aneurisma de la aorta abdominal operados electivamente. Métodos: Se realizó un estudio observacional y descriptivo en 94 pacientes operados de forma electiva en el Instituto Nacional de Angiología y Cirugía Vascular por presentar un diagnóstico de aneurisma de la aorta abdominal. Las variables de estudio fueron: edad, sexo, color de la piel, enfermedades asociadas, diámetro del aneurisma, profilaxis antibiótica, tiempo quirúrgico, tipo de prótesis vascular, tipo de complicación posoperatoria, tiempo de aparición de las complicaciones, estadía hospitalaria posoperatoria y estado al egreso. Se determinaron las frecuencias absolutas y relativas. Resultados: El 56,4 por ciento de los pacientes operados presentó algún tipo de complicación, las cuales fueron más frecuentes en el sexo masculino por encima de los 60 años. Las más predominantes resultaron la bronconeumonía (24,5 por ciento) y las arritmias cardíacas (20,8 por ciento). La proporción de complicaciones se mostró mayor en los pacientes con injertos bifurcados, así como en aquellos sin profilaxis y con un tiempo quirúrgico prolongado. Hubo mayor frecuencia de enfermedades cardiovasculares entre los fallecidos. Conclusiones: En los pacientes operados de forma electiva de aneurisma de la aorta abdominal predominaron las complicaciones respiratorias y cardiovasculares, estas últimas provocaron un aumento en la mortalidad(AU)

Introduction: Abdominal aortic aneurysms are a health problem because of the high mortality they cause. Their follow-up and treatment are essential to avoid post-surgical complications. Objective: Characterize the main post-surgical complications of patients with electively operated abdominal aortic aneurysm. Methods: An observational and descriptive study was conducted in 94 electively operated patients at the National Institute of Angiology and Vascular Surgery after having a diagnosis of abdominal aortic aneurysm. The study variables were: age, sex, skin color, associated diseases, aneurysm diameter, antibiotic prophylaxis, surgical time, type of vascular prosthesis, type of postoperative complication, time of onset of complications, postoperative hospital stay, and state at discharge moment. Absolute and relative frequencies were determined. Results: 56.4 percent of operated patients had some form of complication, which were more common in the males over 60 years. The most predominant complications were bronchopneumonie (24.5 percent) and cardiac arrhythmias (20.8 percent). The proportion of complications was shown to be higher in patients with forked grafts, as well as in those without prophylaxis and with prolonged surgical time. There was a higher frequency of cardiovascular diseases among the deceased patients. Conclusions: In patients electively operated of abdominal aortic aneurysm, there was a predominance of respiratory and cardiovascular complications, and the latter caused an increase in mortality(AU)

Aneurisma idiopático de aorta abdominal en una paciente de 4 años de edad / Idiopathic aneurysm of abdominal aorta in a 4 years patient

Se describe el caso clínico de una paciente de 4 años de edad, quien ingresó en el Servicio de Terapia Intensiva del Hospital Infantil Docente Sur Dr. Antonio María Béguez César de Santiago de Cuba por presentar dolor abdominal intenso, vómitos sanguinolentos, distención abdominal, tumoración palpable en el epigastrio, palidez cutáneo - mucosa, polipnea, taquicardia, hipotensión y trastornos de perfusión periférica, con evolución rápida y progresiva hacia un cuadro de insuficiencia multiorgánica y estado de choque. Los estudios clínicos e imagenológicos confirmaron el diagnóstico de aneurisma de aorta abdominal. A pesar de la atención médica intensiva, la evolución fue desfavorable.

The case report of a 4 years patient is described. She was admitted to the Intensive Therapy Service of Dr. Antonio María Béguez César Southern Teaching Pediatric Hospital in Santiago de Cuba due to an intense abdominal pain, bloody vomits, abdominal strain, palpable tumor in the epigastrium, cutaneous - mucous paleness, polipnea, tachycardia, hypotension and perypheral perfusion disorders, with quick and progressive clinical course toward a picture of multiorganic failure and state of shock. The clinical and imaging studies confirmed the diagnosis of abdominal aorta aneurysm. In spite of the intensive medical care, there was an unfavorable clinical course.

Derivação axilo-ilíaco para proteção de rim transplantado durante a correção de aneurisma de aorta abdominal: relato de caso / Axillary-iliac bypass to protect a transplanted kidney during abdominal aortic aneurysm repair: case report

Resumo Os aneurismas de aorta abdominal (AAA) são os mais frequentes, mesmo quando comparados a outros segmentos da aorta. A prevalência e a história natural de aneurismas arteriais em receptores de transplante de órgão abdominal permanecem incertas. Relatamos a abordagem de um caso de aneurisma de aorta abdominal em um paciente transplantado renal e com alergia ao contraste. Foi realizado o tratamento convencional do aneurisma de aorta abdominal com um by-pass aorto bi-ilíaco. Para manutenção do enxerto renal, foi confeccionado um by-pass temporário da artéria axilar direita até a artéria ilíaca comum direita. O paciente foi encaminhado para a unidade de terapia intensiva, onde permaneceu estável hemodinamicamente e recebeu alta no 2º pós-operatório. A cirurgia convencional aberta com derivação extra-anatômica temporária é uma alternativa para o tratamento do AAA em pacientes com transplante renal.

Abstract Abdominal aortic aneurysms (AAA) are the most common type, even when compared to those involving other segments of the aorta. The prevalence and natural history of arterial aneurysms in abdominal organ transplant recipients remain uncertain. We report a case of abdominal aortic aneurysm in a kidney transplant patient with contrast allergy. Conventional abdominal aortic aneurysm repair was performed, constructing a bi-iliac aortic bypass. A temporary bypass was constructed from the right axillary artery to the right common iliac artery to maintain the renal graft. The patient was transferred to the intensive care unit, where he remained hemodynamically stable, and he was discharged on the 2nd postoperative day. Conventional open surgery with temporary extra-anatomic bypass is an alternative option for treatment of AAA in patients with transplanted kidneys.

Podemos adotar a dosagem sérica da Tenascina-C na avaliação prognóstica do aneurisma e dissecção da aorta? / Could we adopt serum Tenascin-C assays to determine prognosis in aortic aneurysms and dissections?

Resumo O aneurisma da aorta abdominal corresponde a uma dilatação anormal, enquanto a dissecção aórtica aguda é uma delaminação da túnica média com formação de um falso lúmen. A Tenascina-C é uma glicoproteína que pode ser encontrada em situações de lesão tecidual. Nesse sentido, este artigo pretendeu avaliar se a Tenascina-C pode auxiliar na avaliação do prognóstico do aneurisma da aorta abdominal e da dissecção aórtica aguda. Realizou-se uma revisão integrativa da literatura em que foram considerados elegíveis quatro artigos, sendo que dois associaram maiores níveis da Tenascina-C a fatores de proteção e menor risco de lesões, enquanto dois correlacionaram com prognóstico pior. Alguns autores acreditam que a Tenascina-C poderia ser um biomarcador elegível, mas esses estudos ainda são inconclusivos no que diz respeito a seu papel no desfecho clínico dos pacientes com aneurismas.

Abstract Abdominal aortic aneurysm is an abnormal dilatation, while acute aortic dissection is a delamination of the tunica media, forming a false lumen. Tenascin-C is a glycoprotein that can be found in situations involving tissue damage. The objective of this article is to evaluate whether Tenascin-C assays could be of use for predicting prognosis in abdominal aortic aneurysms and acute aortic dissection. We conducted an integrative literature review, for which four articles were considered eligible. Two of these studies associated higher Tenascin-C levels with protective factors and lower risk of injury, whereas the other two correlated them with worse prognosis. Some authors believe that Tenascin-C could be a candidate biomarker, but these studies are still inconclusive with regard to its role in the clinical outcomes of patients with aneurysms.

Tratamiento endovascular del aneurisma de la aorta abdominal con endoprótesis percutáneas en pacientes cubanos / Endovascular treatment of abdominal aortic aneurysm with percutaneous endoprosthesis in Cuban patients

Introducción: Los aneurismas de aorta abdominal resultan dilataciones arteriales a dicho nivel. Su ruptura constituye uno de los principales riesgos y provoca la muerte del paciente, de ahí la importancia de tratarlos a tiempo. Las opciones actuales de tratamiento son la cirugía abierta y la reparación aneurismática endovascular; esta última representa la primera línea de tratamiento, por constituir una técnica mínimamente invasiva con bajas tasas de morbilidad y mortalidad. Objetivo: Evaluar el tratamiento endovascular del aneurisma de la aorta abdominal con endoprótesis percutáneas en pacientes cubanos. Métodos: Entre enero y abril de 2018 se realizó un estudio prospectivo, descriptivo y cualitativo en 6 pacientes del sexo masculino con aneurisma de aorta abdominal, seleccionados aleatoriamente, que cumplieron los criterios de uso de endoprótesis vasculares y estuvieron de acuerdo con realizar el proceder. Se colocaron 6 dispositivos en una sala de angiografía, y se utilizó en los pacientes anestesia general y guía fluoroscópica. Resultados: De forma satisfactoria fue posible el tratamiento endovascular por vía percutánea de los 6 pacientes seleccionados; solo 1 presentó una complicación menor y fue dado de alta a las 72 horas y el resto fue egresado en menos de 24 horas. Se logró implementar por vez primera en el país el sistema de cierre percutáneo Proglide sin complicaciones. Conclusiones: El tratamiento endovascular por vía percutánea de aneurismas de aorta abdominal con endoprótesis vasculares es una alternativa eficaz para la cirugía convencional en pacientes que cumplen los criterios de uso del dispositivo(AU)

Introduction: Abdominal aortic aneurysms are arterial dilations in that level. Their rupture is one of the main risks and it causes death in patients; that is why the importance of treating them early. Among the current treatment options are open surgery and endovascular aneurismal reparation, being the last one in the first line of treatment since it is a minimal invasive technique with low rates of morbidity and mortality. Objective: To evaluate the endovascular treatment of abdominal aortic aneurysm with percutaneous endoprosthesis in Cuban patients. Methods: It was conducted from January to April 2018 a retrospective, descriptive and qualitative study in 6 male patients with aneurysm of the abdominal aorta, selected randomly and who met the criteria of vascular endoprosthesis use and agreed with the performance of the procedure. Six devices were placed in an angiography room and it was used general anaesthetic and fluoroscopic guidance. Results: It was possible in a satisfactory way the endovascular treatment by percutaneous way in the six patients selected; just one presented a minor complication and he was discharged after 72 hours; and the rest were discharged in less than 24 hours. It was implemented for the first time in the country without complications the system of percutaneous closure called Proglide. Conclusions: Endovascular treatment by percutaneous way of abdominal aortic aneurysms with vascular endoprosthesis is an efficient alternative for conventional surgery in patients that met the criteria of use of the device(AU)

Tratamento endovascular de aneurisma de aorta abdominal com fístula aorto-cava utilizando oclusor vascular concomitante a endoprótese bifurcada: relato de caso / Endovascular treatment of an abdominal aortic aneurysm with aortocaval fistula using a vascular occluder and a bifurcated endograft in a single intervention: case report

As fístulas aorto-cava são entidades raras e de etiologia variada, estando frequentemente associadas a significativa morbimortalidade. Acredita-se que o aumento da tensão da parede nos grandes aneurismas resulte em reação inflamatória e aderência à veia adjacente, culminando na erosão das camadas aderidas e na formação da fístula. O tratamento cirúrgico convencional tem altas taxas de mortalidade. Embolia pulmonar paradoxal e o vazamento são complicações temidas do tratamento endovascular. O uso de oclusor vascular associado a endoprótese bifurcada é boa opção no tratamento do aneurisma de aorta abdominal com fístula aorto-cava

Aortocaval fistulae are rare entities with a variety of etiologies and are very often associated with significant morbidity and mortality. It is believed that increased tension in the walls of large aneurysms can cause an inflammatory reaction resulting in adhesion to the adjacent vein and culminating in erosion of the adherent layers and fistula formation. Conventional surgical treatment has high mortality rates. Paradoxical pulmonary embolism and endoleaks are the most concerning complications linked with endovascular treatment. Using a vascular occluder in combination with a bifurcated endograft is a good option for the treatment of an abdominal aortic aneurysm with aortocaval fistula

Tratamento endovascular de aneurisma de aorta abdominal com erosão de vértebra lombar associada à doença de Behçet: relato de caso / Endovascular repair of abdominal aortic aneurysm with lumbar vertebral erosion in Behçet's disease: case report

A doença de Behçet é uma doença sistêmica, multifatorial e autoimune com diversas manifestações clínicas, entre elas o acometimento vascular. Aneurisma de aorta associado a erosão de vértebra lombar é condição rara na literatura, existindo apenas quatro relatos de caso nas bases de dados da PubMed. O presente artigo relata o caso de paciente do sexo feminino com diagnóstico de Doença de Behçet de longa data e aneurisma sacular de aorta abdominal infrarrenal com erosão de vértebra lombar. O caso foi tratado por meio de técnica endovascular com colocação de endoprótese monoilíaca e enxerto fêmoro-femoral cruzado, devido a limitações anatômicas da bifurcação aórtica. O artigo aborda a raridade desse tipo de apresentação da doença e o desfecho do tratamento e apresenta revisão da literatura sobre esse tema

Behçet's disease is an autoimmune, multifactorial, systemic condition with several clinical manifestations, including vascular disorders. An aortic aneurysm with vertebral erosion is rare in association with this pathology and there are only four case reports listed on the PubMed database. This article reports the case of a female patient with a long-standing diagnosis of Behçet's Disease who developed a saccular infrarenal abdominal aortic aneurysm with lumbar vertebral erosion. Her surgical treatment consisted of endovascular repair with a monoiliac endoprosthesis and a femorofemoral crossover bypass, because of limitations imposed by the anatomy of the aortic bifurcation. This paper discusses the rarity of this presentation of the disease and treatment outcomes and offers a brief review of the relevant literature

Retroperitoneal fibrosis: case series of five patients and review of the literature / Fibrose retroperitoneal: série de cinco casos e revisão da literatura

ABSTRACT Chronic periaortitis (CP) is an umbrella term used to describe a group of nosologically allied conditions that include idiopathic retroperitoneal fibrosis (Ormond's disease), inflammatory abdominal aortic aneurysm, and perianeurysmal retroperitoneal fibrosis. Retroperitoneal fibrosis encompasses a range of diseases characterized by the presence of a fibro-inflammatory tissue, which usually surrounds the abdominal aorta and the iliac arteries and extends into the retroperitoneum to envelop neighboring structures-ureters. Retroperitoneal fibrosis is generally idiopathic, but can also be secondary to the use of certain drugs, malignant diseases, infections, and surgery. Here we describe a 5 years follow up (2006-2011) of 5 patients admitted to our hospital with symptoms, laboratory, imaging and pathologic finding compatible with retroperitoneal fibrosis. We review our clinical course of our patient with respect to the literature.

RESUMO Periaortite crônica (PC) é um termo genérico usado para descrever um grupo de condições nosologicamente ligadas que incluem a fibrose idiopática retroperitoneal (doença de Ormond), o aneurisma da aorta abdominal inflamatório e a fibrose retroperitoneal perianeurismática. O termo fibrose retroperitoneal engloba uma gama de doenças que se caracterizam pela presença de um tecido fibroinflamatório que geralmente envolve a aorta abdominal e as artérias ilíacas, se estende ao retroperitôneo e envolve estruturas ureterais vizinhas. A fibrose retroperitoneal geralmente é idiopática, mas pode também ser secundária ao uso de determinados fármacos, doenças malignas, infecções e cirurgia. Este estudo descreve o seguimento por cinco anos (2006-2011) de cinco pacientes internados em nosso hospital que apresentavam sintomas e achados laboratoriais, de imagem e patológicos compatíveis com a fibrose retroperitoneal. Revisou-se a evolução clínica dos pacientes, que foi comparada com os achados da literatura.

Aneurisma de aorta abdominal infrarrenal. Relato de caso / Infrarenal aortic aneurysm. Case report

Paciente masculino, 57 anos, hipertenso, etilista, ex-tabagista, com quadro anterior de acidente vascular encefálico por aneurisma em artéria cerebral média em 1998. No ano de 2013, com sintomas de cansaço e mialgias, pensava estar com dengue, não suportando ficar de pé devido às dores em membros inferiores. Concomitantemente, apresentou paralisia facial central e perda da força motora em membro inferior direito, sendo internado com diagnóstico de acidente vascular encefálico isquêmico. Constatou-se também isquemia subepicárdica lateral alta ao eletrocardiograma, apesar de o paciente se apresentar oligossintomático sob o ponto de vista cardiovascular, sendo submetido a diversas investigações angiográficas e angiotomográficas, possibilitando o diagnóstico do aneurisma de aorta abdominal infrarrenal silencioso. As inespecificidades e o quadro clínico assintomático da doença são dificuldades comumente encontradas no diagnóstico, tornando-se fundamental a utilização de técnicas complementares de alta complexidade para definição do diagnóstico por imagem. São essenciais as atualizações e pesquisas sobre o presente tema, aumentando a acurácia e a precocidade do diagnóstico, e diminuindo, portanto, a morbimortalidade dos pacientes portadores de aneurisma de aorta abdominal.

Abdominal aortic aneurysm (AAA) is an irreversible aortic dilatation below renal arteries, usually, asymptomatic, showing high morbidity and mortality, becoming relevant this clinical report. Abdominal aortic aneurysm is particularly difficult to diagnose. This study aims to describe in detail the diagnostic process in several levels: syndromic functional, anatomical and etiological and commonly difficulties encountered. Male, 57 year-old, hypertensive, alcoholic and smoker with a previous history of stroke due to middle cerebral artery aneurysm in 1998. In the year 2013 with symptoms of fatigue and muscle pain, thought to have dengue, he wasn't supporting to stand up due to a pain in the lower limbs (LL). Simultaneously he suffered central facial paralysis and loss of motor strength in the right leg. Therefore he was hospitalized with a diagnosis of a new stroke. He showed also high lateral subepicardial ischemia on electrocardiogram, although he had a few atipical cardiovascular symptoms. The patient was submitted to diverse angiographic and angiotomographies investigations, allowing the precise diagnosis of a silent infrarenal Abdominal aortic aneurysm . The authors present a clinical case of infrarenal Abdominal aortic aneurysm, reporting diferentt clinical procedures. The report also discusses the endovascular therapeutic approach and the clinical screening and diagnostic methods. The unspecific and asymptomatic clinical picture of this disease were commonly found difficulties in diagnosis, becoming essential the use of complementary techniques of high definition for diagnostic imaging. Updates are required and research on this topic increasing the accuracy for an early diagnosis and treatment, reducing therefore the morbidity and mortality of these patients.

Developing a new endograft for the treatment of juxtarenal aortic aneurysms: definition and experimentation

OBJECTIVES: To analyze angiotomographic parameters of juxtarenal aneurysms to assess the applicability of an endograft model to patients and to create in vitro and in vivo models to assess the new endograft. METHODS: A total of 49 patients with juxtarenal aneurysms were submitted to angiotomographic evaluation, and parameters such as the aortic diameter, the length of the neck, and the angulations of the celiac trunk, superior mesenteric artery and renal arteries; the distances between them; and anatomic variations were analyzed. Based on these parameters, an endograft model was developed and tested in a newly created in vitro model of juxtarenal aneurysm. An experimental model of juxtarenal aneurysm was then established in six pigs weighing 50-60 kg to assess the new endograft model. RESULTS: The angiotomographic parameters of juxtarenal aneurysm measured in this study were similar to those reported in the literature and allowed the development of an endograft based on the hourglass concept, which was applicable to 85.8% of the patients. The in vitro model of juxtarenal aneurysm evidenced good radiopacity and functionality and permitted adjustments in the new device and technical improvements in the procedures for treating these aneurysms. In addition, the porcine model of juxtarenal aneurysm was successfully created in all six animals using a bovine pericardial patch, and use of the new endograft in three pilot procedures evidenced its feasibility. CONCLUSIONS: The Hourglass endograft was rendered applicable to treatment of the majority of patients with juxtarenal aneurysms simply by changing its diameter. Moreover, the new in vitro and in vivo models were shown to be effective for assessing both the presented endograft and experiments assessing the endovascular treatment of juxtarenal aneurysms. .

Aneurisma toracoabdominal / Thoracoabdominal aneurysm

Los aneurismas toracoabdominales son poco frecuentes; según la literatura su incidencia es de 1 por cada 100.000 personas siendo esto estimado en la incidencia de los aneurismas abdominales 1-3%. La edad media de aparición es de 65 años y en su mayoría la principal causa es de enfermedad aterosclerótica. La clasificación de los aneurismas toracoabdominales es en base a la que describió Crawford: Tipo I- Tipo IV. En la Unidad de Cirugía Cardiovascular de Guatemala se trató un caso de un paciente joven con un aneurisma toracoabdominal según la clasificación de Crawford Tipo III.

Thoracoabdominal aneurysms are a rare disease; according to the literature the incidence is 1 per 100,000people this being estimated incidence of abdominal aneurysms 1-3%. The average age of onset is 65 yearsold and mostly the main cause is atherosclerotic disease. The classification of thoracoabdominal aneurysms isbased on that described Crawford: Type I-Type IV. In the Unidad de Cirugía Cardiovascular de Guatemala acase of a young patient with thoracoabdominal aneurysm was treated as classified by Crawford type III.

Tuberculous abdominal aortic aneurysm with alimentary tract hemorrhage: a case report with medico-legal implications / 法医学杂志

An autopsy case of sudden death induced by alimentary tract hemorrhage was presented, which was caused by the unexpected rupture of clinically unrecognized tuberculous abdominal aortic aneurysm (TAAA). The initial diagnosis was made of the syndrome of coronary heart disease and hypertensive disease. The detailed autopsy showed that the alimentary tract hemorrhage was caused by a sudden rupture of the mass after posture changing was ascertained as the cause of death. The diagnosis of TAAA was determined by the autopsy findings. Analysis for the medical dispute of TAAA was described, and the difficulty of the diagnosis and medico-legal implications were also discussed.

Primary Aortoenteric Fistula to the Sigmoid Colon in Association with Intra-abdominal Abscess / 대한소화기학회지

Primary aortoenteric fistula (PAEF) is a rare but catastrophic cause of massive gastrointestinal bleeding. Diagnosis of PAEF is difficult to make and is frequently delayed without strong clinical suspicion. Timely surgical intervention is essential for patient's survival. We report on a case of an 86-year-old woman with no history of abdominal surgery, who presented with abdominal pain. Initially, computed tomography scan showed an intra-abdominal abscess, located anterior to the aortic bifurcation. However, she was discharged without treatment because of spontaneous improvement on a follow-up computed tomography scan, which showed a newly developed right common iliac artery aneurysm. One week later, she was readmitted due to recurrent abdominal pain. On the second day of admission, sudden onset of gastrointestinal bleeding occurred for the first time. After several endoscopic examinations, an aortoenteric fistula bleeding site was found in the sigmoid colon, and aortography showed progression of a right common iliac artery aneurysm. We finally concluded that intra-abdominal abscess induced an infected aortic aneurysm and enteric fistula to the sigmoid colon. This case demonstrated an extremely rare type of PAEF to the sigmoid colon caused by an infected abdominal aortic aneurysm, which has rarely been reported.

Risk Factors of Recurrent Ischemic Colitis: A Multicenter Retrospective Study / 대한소화기학회지

BACKGROUND/AIMS: Recurrence of ischemic colitis (IC) has not been studied extensively. The aim of this study was to investigate the characteristics of recurrent IC in the community setting and to identify any risk factors. METHODS: We conducted a retrospective study in two community hospitals. Medical records of patients with IC from January 2007 to January 2013 were reviewed. Demographic details, clinical features, co-morbidities, concomitant use of medications, laboratory studies, imaging findings, endoscopic and histological features, surgery, hospital stay, and death within 30 days were collected. Patients were divided into two groups (recurrent IC group, non-recurrent IC group). RESULTS: A total of 118 patients with IC were identified. IC recurred in 10 patients (8.5%) during the study period. Half of the patients in the recurrent IC group were current smokers as compared to only 18.7% of patients in the non-recurrent group. In the recurrent IC group, 20.0% of patients never smoked as compared to 61.7% in the non-recurrent group (p=0.027). Abdominal aortic aneurysm (AAA) was more frequent in the recurrent IC group (40.0% vs. 4.7%; p=0.003). No differences in other clinical symptoms, CT scan findings, comorbidities, endoscopic features, or use of concomitant medications were observed between the two groups. The need for surgical intervention, blood transfusion, intensive care unit stay, mechanical ventilation, length of hospital stay, and anatomic location of affected segments did not differ between the two groups. CONCLUSIONS: IC recurred in 8.5% of patients during the six-year study period. Current smoking status and presence of AAA were identifying risk factors for recurrence of IC.