Primary Aortoenteric Fistula Due to Salmonella typhi-related Mycotic Aneurysm.

Primary aortoenteric fistulas (AEF) are rare. The majority of these are due to atherosclerotic aortic aneurysms. Mycotic aortic aneurysms leading to primary AEF are exceedingly uncommon. Here we report a rare case of primary AEF secondary to Salmonella-related mycotic aneurysm and discuss the diagnostic and therapeutic issues.

Primary Aortoduodenal Fistula: A Case Report and Current Literature Review.

Primary aortoduodenal fistula is a rare, life-threatening pathology that is difficult to diagnose and manage. We present the case of a 64-year-old male with a primary aortoduodenal fistula. Our patient initially underwent an endovascular aneurysm repair at an outside institution before being transferred to our tertiary care center, where he ultimately had definitive management with an extra-anatomic bypass, aortic ligation, duodenal resection with primary anastomosis, and gastrojejunostomy tube placement. His surgical cultures grew Candida albicans, and he was discharged with a 6-week course of intravenous antibiotics with subsequent antibiotic suppression for 1 year. He died 14 months postoperatively from tongue squamous cell carcinoma. We also review the current literature regarding epidemiology, pathology, diagnostics, management, and case reports from 2015 to present. Overall, timely diagnosis and treatment is imperative for reducing mortality from primary aortoduodenal fistula, and although formal consensus is lacking regarding most clinical aspects, an increasing number of case reports has helped describe options for management.

Aortoduodenal Fistula After Endovascular Aortic Repair for an Inflammatory Abdominal Aortic Aneurysm: A Case Report.

Aortoenteric fistula after endovascular aortic repair for an abdominal aortic aneurysm is a rare but severe complication. Particularly, a case of inflammatory abdominal aortic aneurysm is extremely rare and there are only 3 reported cases. A 70-year-old man underwent endovascular aortic repair for impending rupture of an inflammatory abdominal aortic aneurysm and was medicated steroids for approximately 2 years. Four years after endovascular aortic repair, he developed endograft infection with an aortoduodenal fistula and a left psoas abscess. He underwent total endograft excision, debridement, in situ reconstruction of the aorta using prosthetic grafts with omental coverage, and digestive tract reconstruction to prevent leakage. Pseudomonas aeruginosa was detected in the infected aortic sac. The patient has not experienced recurrence of infection in the 35 months since his operation.

[Fever and persisting calf abscess ten years after aorta-bifemoral bypass]. / Koorts en een kuitabces door geïnfecteerde aortaprothese.

A 52-year-old woman presented with fever and a persisting calf abscess ten years after she had received an aorta-bifemoral bypass. Her infection parameters were increased and she had anaemia. CT of the abdomen revealed air surrounding the proximal anastomosis of the bypass suggesting bypass graft infection. The diagnosis of an aorta-duodenal fistula was confirmed by gastroduodenoscopy showing migration of the bypass through the wall of the duodenum into the intestinal lumen. The bypass was resected and reconstructed using the superficial femoral vein. The patient recovered uneventful.

Aortobronchial fistula and Listeria endograft infection after repeated T/EVAR: a rare combination.

Here we present a rare combination of aortobronchial fistula and Listeria endograft infection after repeat endovascular aortic repair. Device retention, debridement and negative pressure wound therapy, in combination with suppressive antimicrobial therapy, led to satisfactory control of infection until the patient died due to another complication. The combination of an aortobronchial fistula and Listeria endograft infection has never been described before. This present case should encourage and show clinicians the importance of an interdisciplinary approach in highly difficult clinical courses.

Sudden death with massive hemoptysis from aortobronchial fistula.

Aortobronchial fistula is an uncommon clinical entity, with unpredictable clinical course and significant mortality. Here, we describe a case of fistulous tract between a descending aortic graft and a branch of the left upper lobar bronchus leading to massive hemoptysis causing death for hemorrhagic shock in a 72-year-old man.

Neoaorta Reconstruction Using Both Femoral Veins in a Patient with Secondary Aortoenteric Fistula.

In situ reconstruction using femoral veins is emerging as one of the acceptable options for aortic reconstruction in patients with aortoduodenal fistula. We report a 35-year young male who presented with secondary aortoenteric fistula. His infected aortic graft was removed and was successfully managed by neo-aortic reconstruction, using both femoral veins in a 'pantaloon' fashion. He had smooth postoperative recovery and did not have graft re-infection. He did not show signs of chronic venous insufficiency on long-term follow-up.

Esophageal Resection, Gastric Tube Reconstruction, and Omental Flap Coverage of Iatrogenic Aortoesophageal Fistula After Secondary Thoracic Stentgraft Infection: A Case Report.

Secondary stent graft infection is a life-threatening complication after thoracic endovascular aortic repair (TEVAR). There is no consensus on optimal treatment strategy, but combined antibiotic and surgical treatment is advocated. Two years after his TEVAR procedure, a 70-year-old patient was admitted to the hospital with a secondary periaortic abscess. At first, the abscess was managed with clindamycin and transesophageal drainage. The abscess would not dissipate, and an infected iatrogenic aortoesophageal fistula was formed, which was surgically treated with esophageal resection, gastric tube reconstruction, and omental flap coverage.

Endograft Infection Due to Secondary Aortoenteric Fistula Treated With Custom-Made Bovine In Situ Aortic Bifurcation Graft.

PURPOSE:: To increase awareness of the clinical presentation, diagnostic workup, and treatment options for endograft infections. CASE REPORT:: A 75-year-old male patient was admitted with suspected endograft infection 4 years after endovascular aortic aneurysm repair (EVAR). Although preoperative diagnostics showed no definitive signs of endograft infection, eventual surgical exposure of the endograft revealed signs of advanced inflammation, including the unexpected finding of an aortoduodenal fistula. CONCLUSION:: A detailed evaluation of patient history and clinical examination, performed as a part of routine follow-ups, may be beneficial in identifying possible severe complications after EVAR early on. Regarding options for aortic reconstruction in case of endograft infection, bovine pericardium deserves consideration as a promising, feasible, and easily available graft material.

A case of Brucella aortitis associated with development of thoracic aortic aneurysm and aortobronchial fistula.

OBJECTIVES: The purpose of this case report is to document the occurrence of granulomatous aortitis complicated by formation of a saccular aneurysm and aortobronchial fistula due to Brucella infection. METHODS: A 65-year-old man with a history of feral swine hunting presented with hemoptysis and was found to have a saccular thoracic aortic aneurysm and associated aortobronchial fistula. The aneurysm underwent operative repair with closure of the aortobronchial fistula. RESULTS: Histopathological examination of the aneurysm wall revealed evidence of granulomatous aortitis. Cultures of the blood and aortic wall tissue were positive for Brucella suis. CONCLUSIONS: Although rare, Brucella infection should be considered in the differential diagnosis of aortic aneurysm with granulomatous aortitis.

Diagnostic Value of Dual-input Computed Tomography Perfusion on Detecting Bronchial-Pulmonary Artery Fistula in Tuberculosis Patients with Massive Hemoptysis.

RATIONALE AND OBJECTIVES: This prospective study aimed to evaluate the diagnostic performance of dual-input computed tomography perfusion technique (DI-CTP) in identifying the bronchial-pulmonary artery fistula in patients tuberculosis with massive hemoptysis. MATERIAL AND METHODS: Twenty patients with tuberculosis with massive hemoptysis were enrolled from January 2015 to December 2015. The association between DI-CTP parameters and the diagnostic outcomes of digital subtraction angiography was assessed. Diagnostic efficacy of DI-CTP was evaluated by receiver operating curve (ROC) analyses using the diagnostic outcomes of digital subtraction angiography, which is the gold standard for identifying bronchial-pulmonary artery fistula. RESULTS: Compared to lung segments with normal blood flow (n = 304), those with bronchial-pulmonary artery fistula (n = 164) had a reduced pulmonary flow value, perfusion index (PI) value, and an elevated bronchial artery (BF) value in the DI-CTP scan, which was further confirmed by multivariate logistic regression. ROC analysis showed that PI and bronchial artery has an excellent diagnostic performance (both area under the ROC curve > 0.9, P < .001) and high sensitivity and specificity (from 0.79 to 0.95 at the optimal cutoff). PI has the best diagnostic performance, with an overall diagnostic accuracy of 0.91. CONCLUSIONS: DI-CTP scan possesses the diagnostic value for detecting bronchial-pulmonary artery fistula in patients with tuberculosis with massive hemoptysis, providing an alternative diagnostic method.

Role of Endovascular Aortic Repair in the Treatment of Infected Aortic Aneurysms Complicated by Aortoenteric or Aortobronchial Fistulae.

BACKGROUND: The aim of this study was to compare outcomes and identify factors related to increased mortality of open surgical and endovascular aortic repair (EVAR) of primary mycotic aortic aneurysms complicated by aortoenteric fistula (AEF) or aortobronchial fistula (ABF). METHODS: Patients with primary mycotic aortic aneurysms complicated by an AEF or ABF treated by open surgery or endovascular repair between January 1993 and January 2014 were retrospectively reviewed. Outcomes were compared between the open surgery and endovascular groups, and a Cox's proportional hazard model was used to determine factors associated with mortality. RESULTS: A total of 29 patients included 14 received open surgery and 15 received endovascular repair. Positive initial bacterial blood culture results included Salmonella spp., oxacillin-resistant Staphylococcus aureus, and Klebsiella pneumoniae. Mortality within 1 month of surgery was higher in the open surgery than in the endovascular group (43 vs. 7%, respectively, p = 0.035). Shock, additional surgery to repair gastrointestinal (GI) or airway pathology, and aneurysm rupture were associated with a higher risk of death. Compared with patients without resection surgery, the adjusted hazard ratio of death within 4 years in patients with resection for GI/bronchial disease was 0.25. Survival within 6 months was better in the endovascular group (p = 0.016). CONCLUSION: The results of this study showed that EVAR/thoracic EVAR (TEVAR) is feasible for the management of infected aortic aneurysms complicated by an AEF or ABF, and results in good short-term outcomes. However, EVAR/TEVAR did not benefit long-term survival compared with open surgery.

Aortobronchial and aortoenteric fistula.

Pathologic communication between the thoracic aorta and esophagus or tracheobronchial tree is a rare vascular condition and most commonly develops after open or endovascular aortic repair complicated by infection. Patients with aortoesophageal or tracheobronchial fistula often present with systemic infection and are at risk for major hemorrhage. Medical management is uniformly fatal. Expeditious definitive management requires operative repair by open repair or a combination of endovascular and open procedures. Appropriate antibiotic regimens are important for preventing graft reinfection.

Failed Minimally Invasive Staged Treatment of a Giant Symptomatic Aortic Perigraft Hygroma after Open Aortic Repair.

BACKGROUND: Perigraft hygromas or seromas are an unusual finding and/or complication after open aortic repair. METHODS AND RESULTS: We present a case of an 82-year-old man with a previous urgent aortic bifurcated graft for abdominal aortic aneurysm rupture. He received several treatments due to abdominal compartment syndrome, requiring a Bogota Bag and colostomy derivation. He was finally discharged home and lost on follow-up. Eight years after this procedure, he presented to the urgency department with an abdominal mass and pain. Urgent computed tomography (CT) scan revealed a giant bilobed aortic sac, corresponding with a huge hygroma. A 3-stage minimally invasive procedure was scheduled due to hostile abdomen. Six months after successful treatment, patient came with fever and abdominal pain. He was diagnosed with graft infection and aortoenteric fistula and was treated with explantation and silver in situ repair. CONCLUSIONS: Aortic hygroma or seromas after open repair should be treated by open means whenever possible. Endovascular techniques could be a valid option in selected patients; however, further evidence is needed.

Arteriocutaneous Fistula Associated with Bilateral Femoral Pseudoaneurysms Caused by Bacillus Calmette-Guérin. Apropos of a Case and Review of Literature.

Vascular complications of intravesical instillation of bacillus Calmette-Guérin (BCG) are rare. BCG is an attenuated strain of Mycobacterium bovis that was initially developed for vaccination against tuberculosis, but it has also been used as an adjuvant treatment for bladder transitional carcinoma. We report a patient with a history of instillation of BCG 2 years before, who underwent surgical treatment of 2 pseudoaneurysms. The first, located in the left superficial femoral artery (SFA), was resected, and the artery was ligated because he had a history of femoropopliteal occlusion. After 4 weeks, he presented another one associated with hemorrhage by cutaneous fistula, in the right common femoral artery. In this case, revascularization was performed by means a common-to-deep femoral artery bypass with polytetrafluorethylene graft and reimplantation of SFA. Initially, bacterial cultures were negative, but bacilli cultures identified M. bovis after 3 weeks. Antituberculosis therapy was administered. After 13 months, the patient was asymptomatic and duplex ultrasound showed no signs of recurrent infection. This exposure should be considered if presentation of the false aneurysm is spontaneous and there is a history of bladder carcinoma.

Endocarditis With Fistulization and Rupture of Aortic Root Abscess to the Left Atrium.

BACKGROUND: Infective endocarditis (IE) is a difficult emergency department (ED) diagnosis to make. Symptoms are nonspecific and diverse and the classic triad of fever, anemia, and murmur is rare. Severe IE causes considerable morbidity and mortality and should be diagnosed early. However, echocardiogram is essential but not readily available in the ED and can cause diagnostic delay. CASE REPORT: This case describes severe IE and its unique presentation, diagnostic challenges, and the use of bedside cardiac ultrasonography. A 28-year-old previously healthy male presented with intermittent fevers, arthralgias, and myalgias for 2 weeks. He had twice been evaluated and diagnosed with lumbar back pain. Physical examination revealed moderate respiratory distress, pale skin with a cyanotic right lower extremity, and unequal extremity pulses. He became hypotensive and rapidly deteriorated. Chest x-ray study showed bilateral pulmonary infiltrates with subsequent imaging demonstrating worsening septic emboli. Bedside ultrasound revealed mitral and aortic valve vegetations and a presumed diagnosis of IE with septic embolization was made. Formal echocardiography (ECHO) confirmed IE with an aortic root abscess with rupture and fistulization into the left atrium. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Clinical criteria for IE include blood cultures and ECHO, however, these are often not available to an emergency physician, making IE a diagnostic challenge even in severe cases. The role of bedside ultrasound for IE continues to evolve and its utility in the diagnosis of severe IE is distinctly demonstrated in this case.

The infected heart: ventriculoseptal abscess and intracardiac fistulization.

Infective endocarditis is a rare but potentially deadly infection of the endocardial layer, which can involve the valves of the heart among other structures. The extraordinarily rare complication seen in this case involves extensive damage manifesting in an aortic root abscess resulting in an abnormal communication between the aorta and the atrium known as an aortocavitary fistula (Eur Heart J 2005;26:288-297; Pediatr Cardiol 2011;32:1057-1059; J Am Coll Cardiol 1991;18:663-667). As the disease progresses, wading through the complex symptoms, which may seem unrelated, represents a key challenge in diagnosis. This case describes both early and late findings of endocarditis and highlights a rare complication in which rapid diagnosis and early surgical intervention before the development of hemodynamic sequelae are paramount. In this case, infective endocarditis, a great masquerader in this case, provided a challenging diagnostic situation, a very rare complication, and commonalities of disease characteristics that health care provider should appreciate.