Rupture Of Mycotic Aneurysm Research Articles

Mycotic aneurysm rupture: a sunken rock of central nervous system infection

Mycotic aneurysm rupture: a sunken rock of central nervous system infection

A FATAL CASE OF COMPLICATED SALMONELLA AORTITIS

A FATAL CASE OF COMPLICATED SALMONELLA AORTITIS

Rapid sequential development and rupture of mycotic aneurysms within a period of days in a patient with graft-versus-host disease and angiotropic Scedosporium apiospermum infection

Background: Fungal origin mycotic aneurysms are rare and carry a high mortality rate. Scedosporium apiospermum is an ubiquitous fungus which has been described to cause devastating infections in immunocompromised hosts.Case Description: We report a case of a 23-year-old patient with Burkitt’s lymphoma and graft-versus-host disease admitted with intracerebral hemorrhage and sequential development of 12 anterior circulation aneurysms from disseminated Scedosporium infection. Despite aggressive surgical and antimicrobial treatment, the patient died 6 months later from multiorgan failure. The notable feature of this case is the rapid angioinvasiveness of the infection with new aneurysm formation within days of clear angiographic imaging despite the apparent lack of skull base osteomyelitis.Conclusion: We highlight the difficulties in treating fungal mycotic aneurysms and the associated high mortality. While a less aggressive approach might have been appropriate given the known poor outcomes, the age of the patients as well as the family wishes dictated the treatment decisions.

Surgical treatment of ruptured right middle cerebral artery mycotic aneurysm and central nervous system aspergillosis: Clinical case and literature review

Background: Central nervous system (CNS) aspergillosis is more often met in patients with expressed immune suppression. Still, in 50% of cases of meningitis caused by Aspergillus spp., it is observed in patients without expressed immune suppression. The prognosis of CNS aspergillosis is unfavorable with the general rate of lethality around 70%.Case Description: Clinical case of a 58-year-old man who developed an Aspergillus abscess in the chiasmosellar region and an associated mycotic aneurysm of the right middle cerebral artery (MCA) and intracerebral hemorrhage. Microsurgical clipping of the fusiform-ectatic aneurysm of the right MCA in the conditions of rupture was performed. An extra-intracranial micro anastomosis was formed on the right. An open biopsy of the neoplasm in the chiasmosellar region was made. The neoplasm was yellow and destroyed the bone plate of the skull base. Biopsy results: Mycotic lesion (aspergillosis). The analysis of surgical treatment for mycotic aneurysms in the acute period of hemorrhage in patients with aspergillosis revealed a high rate of lethality. The issue of the feasibility and effectiveness of complicated revascularization interventions in the patients with hemorrhage and aspergillosis remains unsolved.Conclusion: The lack of generally accepted tactics of the treatment of this pathology requires further studies and systemic analysis. A high risk of the lethal outcome in patients with invasive mycotic infection and rupture of mycotic aneurysm highlight the importance of timely diagnostics and the beginning of antimycotic therapy. WThe issue of the evaluation of the revascularization methods effectiveness in patients after surgical treatment of a mycotic aneurysm associated with cerebral aspergillosis remains poor.

P-OT021. Intracerebral hemorrhage in infective endocarditis, with dramatic response to dexamethasone: A case report

Introduction . Intracerebral hemorrhage (ICH) in infective endocarditis (IE) patient is a rare condition. This case describes the clinical features and management of ICH due to IE with favorable outcome. Results . A 19-year-old woman, diagnosed for IE and ventricular septal defect (VSD) undergoing treatment with Levofloxacin 2 × 500 mg orally, presented to our hospital with decreased level of consciousness for 2 days following weakness of right limbs and acute communication difficulty. Physical examination: stupor, right lateralization, positive Babinski sign of right extremity. A non-contrasted head computerized tomography scan (HCTS) image revealed 20 cc ICH in the left frontotemporoparietal lobe with subfalcine herniation. Echocardiography . multiple vegetation in tricuspid valve and VSD. Streptococcus mitis/Streptococcus oralis were confirmed by the blood cultures. We prescribed 5 mg dexamethasone injection every 6 hour, tapered off after 3 days and replaced the antibiotics with Cefotaxime injection 1 gram every 8 hours. On day 14, HCTS evaluation showed improvement with 4.2 cc ICH in the left frontotemporoparietal lobe with significant improvement of the clinical state. Patient was discharged on day 39 with sequelae of UMN paresis of the 7th and 12th right cranial nerves. Conclusion . ICH in IE may be caused by hemorrhagic transformation, mycotic aneurysm rupture, pyogenic/immune complex arteritis, and/or septic emboli that causes erosive arteritis with ruptured vassels, requiring comprehensive management. Clinical improvement after administration of steroid explained the neurologic deficit was due to a vasculitis mechanism, although there are no guidelines regulate the use of steroids in IE patients with ICH. Cardiac surgery may consider to be delayed at least 4 weeks if ICH is found except there is an urgent indication.

Ruptured cerebral mycotic aneurysm, an unusual infective endocarditis presentation.

Although septic embolization associated with infective endocarditis is relatively frequent, mycotic cerebral aneurysms are a rare and potentially fatal complication. The authors report the case of a woman admitted with a cerebral haemorrhage due to mycotic aneurysm rupture, which led to a subacute infective endocarditis diagnosis. The patient underwent craniotomy with aneurysm excision and mitral valvuloplasty due to severe valvular insufficiency, with a favorable clinical outcome. The authors make a brief review, highlighting the challenge of the management of these patients, especially at surgical approach, which requires an individualized therapy strategy based on patient evolution.

Ruptured Mycotic Aneurysm of the Common Carotid Artery: A Case Report

Mycotic aneurysms of the common carotid artery (CCA) are very rare and warrant surgical treatment to prevent rupture and death. A 89-year-old man who complained of a sore throat and swelling of the right side of neck. He had no history of trauma or neck infection. Physical examination revealed hard and pulsatile mass. Computed tomography showed initially pseudoaneurysm rupture on the right CCA with surrounding inflammation. The emergency operation revealed mycotic aneurysm rupture with CCA necrosis and was successfully done by wide debridement and carotid artery resection with interposition bypass. The resected tissue and blood culture grew growth of Staphylococcus aureus group. We report a rare case of mycotic aneurysm of right CCA that treated by bypass interposition.

Complicated infective endocarditis: a case series

BackgroundInfective endocarditis is associated with not only cardiac complications but also neurologic, renal, musculoskeletal, and systemic complications related to the infection, such as embolization, metastatic infection, and mycotic aneurysm.Case presentationWe report three cases (the first patient is Chinese and the other two are Koreans) of complicated infective endocarditis; two of the cases were associated with a mycotic aneurysm, and one case was associated with a splenic abscess. One case of a patient with prosthetic valve endocarditis was complicated by intracerebral hemorrhage caused by mycotic aneurysm rupture. A second case of a patient with right-sided valve endocarditis associated with a central catheter was complicated by an abdominal aortic mycotic aneurysm. The third patient had a splenic infarction and abscess associated with infected cardiac thrombi.ConclusionsComplicated infective endocarditis is rare and is associated with cardiac, neurologic, renal, musculoskeletal, and systemic complications related to infection, such as embolization, metastatic infection, and mycotic aneurysm. Infective endocarditis caused by Staphylococcus aureus is more frequently associated with complications. Because the mortality rate increases when complications develop, aggressive antibiotic therapy and surgery, combined with specific treatments for the complications, are necessary.

Fatal Rhino-Orbital-Cerebral Mucormycosis Complicated with Thrombosis and Rupture of Mycotic Aneurysm in Distal Internal Carotid Artery

Mucormycosis is a rare opportunistic infection caused by fungi of the order Mucorales that typically occurs in patients with diabetes or immunocompromised state. Rhino-orbital-cerebral mucormycosis is the most common type, often has a life-threatening outcome. Mucormycosis has specific vascular tropism complicating mucorthrombosis or mycotic aneurysm. We report a diabetic patient presenting with ophthalmoplegia, orbital necrosis, and contralateral hemiparesis, who suddenly progressed to coma and died of subarachnoid hemorrhage due to the rupture of mycotic aneurysm in distal internal carotid artery. Key Words: Rhino-orbital-cerebral mucormycosis, Distal internal carotid artery, Mycotic aneurysm

Are respiratory complications common causes of death in inflammatory myopathies? An autopsy study

Polymyositis (PM) and dermatomyositis (DM) are idiopathic inflammatory myopathies that are associated with a variety of clinical manifestations including pulmonary complications. The objective of the present study was to determine the causes of deaths in this complex patient population. A computer-assisted search of medical and autopsy records identified a total of 39 patients with either PM or DM who underwent an autopsy at the Mayo Clinic (Rochester, MN, USA) over a 29-year period from 1 January 1981 to 31 December 2009. The immediate causes of death along with contributing causes were determined by reviewing all available clinical data and autopsy findings. We also analysed the discordance between ante-mortem clinical diagnoses provided by clinicians and the final diagnosis by the post-mortem analysis. Respiratory (33%), infectious (28%) and cardiovascular diseases (26%) accounted for the majority of immediate causes of death. Acute exacerbation of chronic interstitial lung disease (15%) and bronchopneumonia (15%) were the most common specific causes. Immediate cause of death was not suspected in nearly one third of cases and included bronchopneumonia, sepsis, acute myocardial infarction, aspiration pneumonia, pulmonary embolism, aortic stenosis, mycotic aneurysm rupture and acute haemoperitoneum. We conclude that pulmonary injury is the immediate cause of death in one third of patients with PM/DM; acute exacerbation of chronic interstitial lung disease and bronchopneumonia were the most common specific causes. Immediate cause of death was not established ante-mortem in nearly one third of cases, and some of these causes were treatable.

Chest pain with ST segment elevation in a patient with prosthetic aortic valve infective endocarditis: a case report.

IntroductionAcute ST-segment elevation myocardial infarction secondary to atherosclerotic plaque rupture is a common medical emergency. This condition is effectively managed with percutaneous coronary intervention or thrombolysis. We report a rare case of acute myocardial infarction secondary to coronary embolisation of valvular vegetation in a patient with infective endocarditis, and we highlight how the management of this phenomenon may not be the same.Case presentationA 73-year-old British Caucasian man with previous tissue aortic valve replacement was diagnosed with and treated for infective endocarditis of his native mitral valve. His condition deteriorated in hospital and repeat echocardiography revealed migration of vegetation to his aortic valve. Whilst waiting for surgery, our patient developed severe central crushing chest pain with associated anterior ST segment elevation on his electrocardiogram. Our patient had no history or risk factors for ischaemic heart disease. It was likely that coronary embolisation of part of the vegetation had occurred. Thrombolysis or percutaneous coronary intervention treatments were not performed in this setting and a plan was made for urgent surgical intervention. However, our patient deteriorated rapidly and unfortunately died.ConclusionClinicians need to be aware that atherosclerotic plaque rupture is not the only cause of acute myocardial infarction. In the case of septic vegetation embolisation, case report evidence reveals that adopting the current strategies used in the treatment of myocardial infarction can be dangerous. Thrombolysis risks intra-cerebral hemorrhage from mycotic aneurysm rupture. Percutaneous coronary intervention risks coronary mycotic aneurysm formation, stent infections as well as distal septic embolisation. As yet, there remains no defined treatment modality and we feel all cases should be referred to specialist cardiac centers to consider how best to proceed.

An Intriguing Co-Existence: Atrial Myxoma and Cerebral Cavernous Malformations: Case Report and Review of Literature

It is commonly postulated that neurologic complications of atrial myxomas are due to either direct tumor embolization or mycotic aneurysm of cerebral vasculature or rupture of mycotic aneurysms of cerebral arteries. However, the authors report the case of 63-year-old woman with a large left atrial myxoma whose progressive left-sided weakness was due to a different neurologic mechanism, namely, multiple bleeding cavernous malformations, which were visualized by magnetic resonance imaging of the brain. Cerebral cavernous malformations coexist with mesenchymal anomalies of other organs, including the liver, kidneys, and retinas. To the best of the authors' knowledge, this is only the second reported case of coexistent cerebral cavernous malformations and atrial myxoma.

Arterial Mycotic Aneurysm Rupture of Two Kidney Cadaveric Renal Transplantation Recipients Secondary to Enterococci and Candida

Arterial Mycotic Aneurysm Rupture of Two Kidney Cadaveric Renal Transplantation Recipients Secondary to Enterococci and Candida

Secondary Infections of Thoracic and Abdominal Aortic Endografts

To review several cases of stent-graft infection with respective outcomes to identify clinical presentations and responses to treatment options. The authors performed a single-center retrospective review of all secondary endograft infections from January 2000 to June 2007. Infections were identified from an institutional database containing all abdominal and thoracic endovascular aneurysm repairs (EVAR and TEVAR) performed at the treating hospital. From January 2000 to June 2007, 389 EVAR and 105 TEVAR were performed at the treating hospital. Ten endograft infections were identified (five EVAR and five TEVAR). Four infections occurred in grafts placed at outside institutions and six in grafts placed in-house. The in-house prevalence of EVAR and TEVAR infection is 0.26% and 4.77%, respectively. None were placed for a presumed pre-existing mycotic aneurysm. The mean time from the index procedure to the diagnosis of infection was 243.6 days +/- 74.5. Two patients who underwent EVAR presented with a contained rupture, and the remaining eight patients presented with constitutional symptoms and/or abscess formation on imaging studies. Microbiology cultures revealed Propionibacterium species (n = 3), Staphylcoccus species (n = 3), Streptococcus species (n = 2), and Enterobacter cloacae (n = 1). All EVAR patients underwent removal of the infected endograft and reconstruction with extraanatomic bypass (n = 3) or in situ homograft placement (n = 2). During a mean follow-up of more than 1 year, there were no recognized complications or recurrence of infection. Only one of the five TEVAR patients underwent removal and interposition grafting with an antibiotic-impregnated Dacron graft. The remaining four patients were medically managed--one patient survived and was placed in hospice care, two died of mycotic aneurysm rupture, and one died from multiorgan system failure secondary to sepsis. Graft-related septic complications following EVAR or TEVAR are rare but associated with significant mortality. Several surgical treatment options are available, each potentially equally successful. The effect of prophylactic antibiotic use during subsequent invasive procedures must be solidified.

Abstract No. 42: Secondary Infection of Thoracic and Abdominal Aortic Endografts

Thoracic and abdominal endovascular aneurysm repair (TEVAR and EVAR) have rapidly grown as less invasive alternatives to traditional open surgical repair of the diseased aorta. Secondary infections of indwelling prosthetic endografts is an infrequent occurrence, however the diagnosis and treatment of this problem can be daunting. Reviewed are several cases with respective outcomes. Single-center retrospective review of all secondary endograft infections from April 2002-September 2007. Data analysis includes chart review, procedural records, imaging, microbiology, and serologic information. From January 2000-September 2007, 389 EVARs and 105 TEVARs have been performed at the treating hospital. Among the 10 endograft infections identified (5 EVAR and 5 TEVAR), 4 were grafts placed at outside institutions and 6 were placed in-house. None were placed for a presumed pre-existing mycotic aneurysm. Mean time from index procedure to diagnosis of infection was 172.7 ± 70.9 days. Two EVAR patients presented with a contained rupture and the remaining 8 patients presented with constitutional symptoms and abscess formation on imaging studies. Microbiology cultures revealed Propionbacterium (n=2), Methicillin-resistant Staphylcoccus aureus (n=4), mixed gram-negative rods (n=1), Escheria coli (n=1), Coagulase-negative Staphylococcus aureas (n=1), Streptococcus pneumoniae (n=1). All EVAR patients underwent attempted removal of the infected endograft and reconstruction with extra-anatomic bypass (n=3), in situ homograft placement (n=1), and 1 intraoperative death. Only 1 TEVAR patient underwent removal and interposition grafting. The remaining 4 TEVAR patients were medically managed and 2 died of mycotic aneurysm rupture. Graft-related septic complications following TEVAR or EVAR are rare, but associated with significant mortality. Vigilance with regards to sterility and antibiotic prophylaxis during the index procedure is mandatory. Additionally, risk factors associated with secondary seeding of endografts are unknown. Guidelines for prophylactic antibiotics usage during subsequent invasive procedures need to be solidified.

Stroke in central nervous system infections

Stroke subtypes and etiology may differ between developing and developed countries. Infections are a relatively common cause of stroke in tropical regions. To review the main infectious diseases associated with stroke. Prevalence of stroke in HIV patients is around 1%. Pathogenic mechanisms include HIV vasculopathy, vasculitis, cardioembolism, acquired hypercoagulability, and the effect of opportunistic infections. Treatment with protease inhibitors has been associated with premature atherosclerotic vascular disease. Emerging viral infections that are associated with stroke include viral hemorrhagic fevers, Japanese encephalitis, dengue, and West Nile virus. Vasculitis involving perforating vessels of the brain is a cerebrovascular complication of tuberculous meningitis. Small, medium, and large arteries of the anterior circulation can be involved. A progressive intracranial arteriopathy afterLeptospira interrogansinfection has been described, which involves the large intracranial arteries. Cerebrovascular complications of mycosis are associated with large vessel vasculitis, direct vessel damage by invasion or embolization, and subarachnoid hemorrhage due to mycotic aneurysm rupture. Pathological findings of cerebral malaria include diffuse cerebral edema, perivascular ring hemorrhages, white matter necrosis, parenchyma petechial hemorrhages, occlusion of brain vessels, and sequestration of infected erythrocytes in cortical and perforating arteries. Stroke can occur in subarachnoid neurocysticercosis and the lesions in such cases consist mostly of deep lacunar infarctions resulting from endarteritis of small penetrating arteries. Cardiac arrhythmias, congestive heart failure, apical aneurysm, and mural thrombus are the conditions that predispose patients with American trypanosomiasis to cardioembolism. Gnathostoma spinigerum infestation is a cause of hemorrhagic stroke in Asia. Infectious and tropical diseases should be included in the differential diagnoses of stroke.

Complicaciones neurológicas como manifestación inicial de endocarditis infecciosa

Neurologic complications of infective endocarditis (IE) are frequent. In many cases, they are the initial feature and considerably impair the prognosis of the disease. The most common neurologic manifestation is embolic stroke, but other many neurologic events have been described, ranged from cerebral hemorrhage due to rupture of mycotic aneurysm to the exceptional aseptic meningitis with acellular cerebrospinal fluid. We describe 3 cases that represent this wide spectrum of presentation. Ischemic stroke in the first patient and cerebral hemorrhage in the second were respectively documented several days before the diagnosis of IE. In the third case, acellular meningitis was the unusual clinical debut of aortic IE. Cerebral infarct or hemorrhage are exceptionally caused by an underlying IE, so a high level of suspicious is needed to recognize these complications. The best management to improve the prognosis has to be based on a rapid diagnosis and onset of antibiotic treatment, considering valve replacement in the adequate timing.

Infected splenic artery aneurysm with associated splenic abscess formation secondary to bacterial endocarditis: Case report and review of the literature

Infected aneurysms are rare and may present with rupture or sepsis. Surgical treatment is often required to prevent catastrophic sequelae. Bacterial endocarditis is one of the classic causes of infected aneurysm. We present a case of a 6.1-cm infected splenic artery aneurysm secondary to endocarditis. Surgical treatment consisted of aortic and mitral valve replacements, splenic artery aneurysm resection, and splenectomy. We reviewed five other reported infected splenic artery aneurysms in which documented ruptured had occurred in three patients. Because the rate of rupture in these patients appears to be quite high, infected splenic artery aneurysms require prompt treatment.

Septic discitis as initial manifestation of streptococcus bovis endocarditis

A 68-year-old man with septic discitis of low lumbar spine is presented. The patient suffered an acute hemorrhagic stroke due to rupture of mycotic aneurysm. Streptococcus bovis biotype I was found in blood cultures. Echocardiography showed bioprosthesis aortic endocarditis. Cardiac surgery was not performed because of normal bioprosthesis function and absence of periannular complications. The patient was discharged after 6 weeks of antibiotic treatment.

Rapidly advancing invasive endomyocardial aspergillosis

The exposure to Aspergillus organisms/spores is likely common, but disease caused by tissue invasion with these fungi is uncommon and occurs primarily in the setting of immunosuppression. We report a case of rapidly advancing invasive endomyocardial aspergillosis secondary to prolonged usage of multiple broad-spectrum antibiotics in a nonimmunocompromised host. A 36-year-old cotton textile worker presented to our institution with a 3-month history of weight loss and fatigue. He reported receiving prolonged use of multiple broad-spectrum antibiotic treatment. The echocardiogram demonstrated multiple endomyocardial vegetations and a mass in the left atrium. Myocardial biopsy specimen revealed an invasive endomyocardial aspergillosis. The patient was investigated for immune deficiency including HIV, and this workup was negative. Treatment was started with amphotericin B and heparin for presumed left atrial thrombus. The patient died because of a rupture of mycotic aneurysm that resulted in cerebral hemorrhage. This case illustrates the risk of an invasive fungal infection in a nonimmunocompromised host who is a prolonged user of antibiotics in the setting of environmental exposure of opportunistic invasive fungal infections.